be cleaned out

常见例句

The decay must be cleaned out and the cavity filled by a dentist.
必须由牙科医生把龋坏清理干净并充填。
The tars must be cleaned out and the gas compressed to 20 to 70 atmospheres of pressure.
把煤焦油分离掉之后，剩余的混合气体要制成20~70个大气压的压缩气体，然后让压缩气体流经一种特殊的催化剂。
Earwax is a protective material that contains bacteria-fighting elements, but it sometimes accumulates and has to be cleaned out because it can impede hearing or cause pain.
耳垢含有对抗细菌的成分，是一种保护性物质，但有时它会堆积成堆，影响听力或造成痛苦，因此必须被清理掉。

The infected material must then be cleaned out completely and the drilled section filled in.
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