| Chinese | English |
| 不在适当〔应有〕位置 | out of position |
| 不在适当的位置 | out of place |
| 不在适当的地位 | out of place |
| 不妥〔得〕当的 | unadvisable |
| 不妥当〔可取，明智的，失策的〕 | inadvisable |
| 不应当 | oughtn't |
| 不应当用冷的砂轮进行强力打磨 | but the wheel should be allowed to warm up slowly |
| 不应当用冷的砂轮进行强力打磨 | a heavy cut should not be taken with a cold abrasive wheel |
| 不当 | mal- |
| 不当 | mis- |
| 不当 | improper |
| 不当令 | out-of-season |
| 不当令的 | out of season |
| 不当作朋友的 | unfriended |
| 不当心 | nonattention |
| 不当心的 | inadvertent |
| 不当班值日 | off duty |
| 不当的 | unjustified |
| 赏罚不当的 | unmerited |
| 不当的 | undeserved |
| 不当的处理 | misconduct |
| 诉讼当事人的不当联合 | misjoinder |
| 不当行为 | undesirable act |
| 不得当地做 | scamp |
| 不得当的 | unseasonal |
| 不得当的 | unseasonable |
| 不恰当 | miss one's aim |
| 不恰当 | miss the aim |
| 不恰当 | solecism |
| 不恰当 | miss the mark |
| 不恰当的 | unseemly |
| 不恰当 | miss one's mark |
| 不恰当〔适宜〕的 | incorrect |
| 不恰当地 | wrongly |
| 不恰当的 | out of the way |
| 不恰当的 | ojf the mark |
| 不恰当的 | inapposite |
| 不恰当的 | bad |
| 不恰当的言行 | infelicity |
| 不恰当组合 | irrelevancy |
| 不是恰当〔令人满意〕的描述 | be not the word for it |
| 不是恰当的字眼 | be not the word for it |
| 不正当〔常，直〕的 | unfair |
| 不正当〔义〕的 | unrighteous |
| 不正当〔公平〕的 | raggy |
| 不正当〔不诚实,恶劣〕的行为 | misdealing |
| 不正当举止 | misbehaviour |
| 不正当举止 | misbehavior |
| 不正当地 | foul |
| 不正当地代表 | misrepresent |
| 不正当地把…归于 | arrogate |
| 用不正当手段取得，处理 | wangle n. |
| 不正当的 | unwarranted |
| 不正当的 | untrue |
| 不正当的 | shocking |
| 不正当的 | sidewind |
| 不正当的 | perverted |
| 不正当的 | perverse |
| 不正当的 | illicit |
| 不正当的 | crooked |
| 不正当的 | adulterine |
| 不正当的手段 | sharp practice |
| 不正当的男女关系 | amour |
| 不正当的行为 | crookery |
| 不直接了当地说 | beat around the bush |
| 不直接了当地说 | beat about the bush |
| 不确当解释 | improper remark |
| 不适〔恰〕当 | impertinence |
| 不适〔恰〕当 | impertinency |
| 不适 恰当的 | amiss |
| 不适〔正〕当地 | unduly |
| 不适〔恰〕当的 | inappropriate |
| 不适〔恰〕当的 | inapt |
| 不适〔妥〕当的 | improper |
| 不适当 | impropriety |
| 不适当 | inaptitude |
| 不适当 | incompetence |
| 不适当 | inexpedience |
| 不适当 | inexpediency |
| 不适当 | incompetency |
| 不适当 | incapacity |
| 不适当〔对应，相适应，协调〕 | inadequacy |
| 不适当 | inadequate |
| 不适当〔恰当，合适，相称，相宜，相配〕的 | unbefitting |
| 不适当〔宜，合〕的 | unsuited (for,to) |
| 不适当〔合〕的 | incompetent |
| 不适当〔对应，妥当，相适应〕的 | inadequate |
| 不适当〔不正确〕的位置 | out-of-position |
| 不适当〔不正确〕的位置 | out of position |
| 不适当地 | unhappily |
| 不适当地结合〔配合〕 | misally |
| 不适当的 | ill-posed |
| 不适当的 | inept |
| 不适当的 | infelicitous |
| 不适当的 | out of place |
| 不适当的 | unfit |
| 不适当的 | unhappy |
| 不适当的〔地〕 | malapropos |
| 不适当的 | incommensurate |
| 不适当的 | immodest |
| 不适当的 | out of character |
| 不适当的 | inappropriate |
| 不适当的事物 | infelicity |
| 不适当的配合 | misalliance |
| 不靠地方教育当局供给经费的 | nonprovided |
| 不顺当 | go amiss |
| 举止不当 | break |
| 人事安排不当 | malassignment |
| 作不适当的角色分配 | miscast |
| 你要不要来点苹果派当甜点？ | Would you like some apple pie for dessert? |
| 使不适当〔不相宜，不合格〕 | unfit |
| 使定位不当 | misorient |
| 使用不当不足 | underuse |
| 使用应用不当不正确 | misapplication |
| 使用不当的名称 | misnomer |
| 使用M音不当 | mutacism |
| 删去…的不适当部分 | geld |
| 判断不当的 | injudicious |
| 判断不当的 | injudicial |
| 加压不当 | mispressing |
| 势不可当的 | sweeping |
| 处理不当 | mismanage |
| 处理操作不当 | mishandle |
| 完全不把…当做问题 | shut the door upon |
| 对 M 不当一回事 | take M for granted |
| for, to + inf.对…来说不适当不足的 | inadequate to |
| 对政务管理不当不善 | misgovern |
| 对不起，今天我们酒店的客人相当多 | Oh, I'm sorry. We're heavily booked today |
| 对不起，那星期我们酒店的客人相当多 | Oh, I'm sorry. We're heavily booked for that week |
| 对…指导不当 | misorient |
| 当M不在场的时候 | in the absence |
| 当…不在场的时候 | in one's absence |
| 〔拉丁语〕当…不在时 | in absentia |
| 当…不在时 | in the absence of... |
| 当你喉咙疼痛的时候，就会感到十分不舒服 | You feel very uncomfortable when you have a sore throat |
| 当功率因数在滞后1 ~0,5变化时,功率计在满标度的二分之一处的误差变化不应大于满标度的0,25% | the error of a wattmeter at half full-scale shall not vary by more than 0. 25% of full scale for Precision instruments when the power factor is varied between unity and 0. 5 lagging |
| 当心不要做 | be careful not to + inf. |
| 当心不要弄错 | take care there's no mistake |
| 当我的心脏停止狂跳，脸不再绯红时，在厨房和走廊间遇到的那个人似乎显得遥远了 | When my heart stopped pounding and my face was no longer scarlet, the encounter between the kitchen and the hall seemed a long way away |
| 当温度不变时,空气的密度同压力成正比 | the density of the air varies directly as pressure, with temperature constant |
| 当然〔绝对〕不 | Nellie |
| 当然〔绝对〕不 | Nelly |
| 当然〔绝对〕不 | nelly¹ |
| 当然，如果找不到，航空公司会赔偿，但我们相信能找到 | Well, of course, in that case the airline will pay you compensation. But I'm sure we'll find it |
| 当空气质量被评定为极不健康时，该机构建议人们终止一切剧烈的户外活动，不论时间长短 | When air quality is rated very unhealthy, the agency says everyone should discontinue all vigorous outdoor activities regardless of duration |
| 形状〔式样〕不适当的 | unlicked |
| 很不幸的是，由于您使用不当，致使电视机损坏，您得要赔偿 | Unfortunately, you have to compensate for the TV set because of your improper use |
| 您应该当时检验核对现金的数量与真伪，因为现金一旦离开前台我们将不再担负任何责任 | The genuineness and amount of the cash should be checked as soon as you get it. I'm afraid we bear no responsibilities for that after you leave the Front Desk |
| 执法不当 | miscarriage |
| 执行不当 | misact |
| 找不到恰当字眼 | be at a loss for a words |
| 找不到恰当字眼 | be at a loss for a word |
| ”据《东京商业杂志》所言，“日本人送礼至关重要，而不像西方仅把它当作一件不起眼的事。” | According to Business Tokyo, among the Japanese "gift giving is a necessity, not merely a nicety as in the West |
| 措词不当 | misword |
| 措辞用字不当 | cacology |
| 提法不当的 | ill-posed |
| 提法不恰当的 | not well-posed |
| 操作不当失误 | misoperation |
| 操作处理不当 | mishandling |
| 昨天下午到达里昂，然后叫一辆出租车到了喜来登酒店，当我收拾行李时，发现手提包不见了，我估计是丢在出租车上了 | Yesterday afternoon, I arrived at Lyon. Then I called a taxi to the Sheraton Hotel. After that, when I put my luggage in order, I found my handbag missing. I supposed I lost it in the taxi |
| 更不用说,当然 | not to speak of |
| 钱财来得不正当的 | fast |
| 校准不当 | malalignement |
| 校准不当 | malalignment |
| 用不正当手段获取 | maverick |
| 相当不错 | be not to be sneezed at |
| 管理不当不善 | misadministration |
| 组合配合不当 | mismate |
| 行为不当不端，不规矩 | misdemean |
| 行为不当不规矩 | misbehave |
| 装货不当 | overstowing |
| 证明被告当时不在犯罪现场 | prove an alibi |
| 调校整不当 | misalignment |
| 这不十分妥当 | it's not quite proper |
| 这有点不妥当 | it's not quite proper |
| 这里是50美元。不用找钱了。当是我给你的小费 | Here are $50. Keep the change. That's my tip for you. |
| 通常来说我国一般不允许以下人员入境：精神病患者、传染病患者、刑事罪犯、从事不正当职业者 | Generally speaking, such kind of people are not allowed entry into my country as psychopaths, infectious people, criminals and people who are in illegitimate occupation |
| 通过不正当途径的 | backdoor |
| 锐不可当的 | knockdown |
