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   English
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noun | adjective | to phrases
optional ['ɔpʃ(ə)nəl] n
bridge. 选择性的
wushu. 自选套路
optional ['ɔpʃ(ə)nəl] adj.
gen. 非必须的; 随意的; 随〔任〕意的; 不是必须的
agric. 任择的; 任意的 (optionalis)
archit. 意的
auto. 选装的; 选装件; 可迭择的; 附加的
busin. 取舍的; 选择的; 有选择权的
chem. 选购的
CNC 可选的
dril. 随便的
econ. 非强制的; 可任意选择的
met. 任意的; 备用的; 选用的; 非限制性的
mil., air.def. 可选的用于帧格式
proj.manag. 暂定的
shipb. 任意选择的
sport. 自选动作; 可选择的; 任选的
tech. 可选择 (的); 任意选择
 English thesaurus
optional ['ɔpʃ(ə)nəl] abbr.
abbr. opsh
abbr., polym. opt.
Optional ['ɔpʃ(ə)nəl] abbr.
abbr., insur. o/p
mil., abbr. O
optional: 417 phrases in 59 subjects
1
Advertising1
Agriculture3
Air defense1
Animal husbandry1
Automobiles23
Aviation7
Bridge card game2
Business35
Chemistry1
China1
Commerce11
Compressors3
Computer networks1
Construction1
Corporate governance3
Cryptography1
Dragon dance1
Drilling1
Ecology1
Economy23
Electronics13
Exhibitions1
Figure skating1
Finances10
Food service and catering2
Football1
General3
Genetics2
Geophysics1
Gymnastics8
Hydroelectric power stations3
Information technology8
International Monetary Fund1
International trade40
Law1
Logistics2
Management2
Marketing2
Mathematics1
Metallurgy9
Oil / petroleum7
Oil processing plants1
Patents1
Project management11
Rail transport3
Rugby football1
Scuba diving4
Securities19
Selective breeding1
Shipbuilding1
Space6
Sports2
Technology90
Telecommunications14
Textile industry20
Transport1
Weightlifting1
Wushu1