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1.cleaning up 清洁
例句:This room needs cleaning up.
这房间需要打扫。
2.nuclear power 核武器
例句:Japan has announced plans for a sharp rise in its nuclear power generation.
日本宣布了大幅增加核能发电的计划。
3.air conditioner 空调
例句:The air conditioner of my room is not working.
我房间的空调无法正常运行了。
4.block off 阻挡
例句:They had blocked off the fireplaces to stop draughts.
他们已经封住了壁炉，以阻挡通风。
