| English | Chinese |
| bush clearing The removal of brush using mechanical means, either by cutting manually or by using machinery for crushing, rolling, flailing, or chipping it, or by chemical means or a combination of these | 灌木清理 (使用机械方法清除灌木，或者用手工或者通过使用机械碾碎、滚压、挤压或切碎灌木，或者通过化学方法或者使用这些方法的组合。) |
| Clear Air Act Amendments | 美国清洁空气法修正案 |
| Clear Coal Technology programme | 美国清洁煤炭技术方案 |
| clearing sludge | 清除污泥 |
| information clearing-house A central institution or agency for the collection, maintenance, and distribution of materials or data compiled to convey knowledge on some subject | 信息交换中心 (负责收集、维护及分发材料或数据的中央机构或专业行政机构，该材料或数据是被汇编起来传递某一主题知识的。) |
| land clearing Removal of trees, undergrowth, etc. in preparation for ploughing, building, etc. | 土地清理 (清除树木、灌木丛等，为耕作或建筑等做准备。) |
| plan to clear | 清除计划 |
