1. They clamped down on drug pushers.
    他们严厉取缔贩毒。

1. clamp down

1. 压制,取缔：chase追逐,追赶 | clamp down压制,取缔 | clemency仁慈

2. 取缔, 施加压力：clamp down on || 施压力于 | clamp down || 取缔, 施加压力 | clamp error || 夹紧误差

3. 公共查询·英语单词大全

3. 更加严格：Off the record: 个人的、非正式的、非公开的 | Clamp down: 更加严格 | Gung ho: 热忱的

1. 取缔;压制;管制;镇压
    To clamp down on people or activities means to take strong official action to stop or control them.

    e.g. If the government clamps down on the protestors, that will only serve to strengthen them in the long run...
           如果政府镇压抗议者，从长远来看，这将只能使他们更加坚决。
    e.g. Banking regulators failed to clamp down until earlier this month.
           银行监管机构直到本月初才开始严格管制。

1. repress or suppress (something regarded as undesirable)

    e.g. The police clamped down on illegal drugs

    Synonym: crack down