The Home Office is usually quick to deport undesirables.

内政部通常会迅速地将不受欢迎人士驱逐出境‖。

柯林斯例句

There are guards at the door to keep out the undesirables.

门口有卫兵防止不良分子入内.

《简明英汉词典》

There are too many candidates. Just weed out all the undesirables.

考生太多, 请把所有不合需要的去掉.

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