n. 取缔;制裁;镇压 [+ on/against]
crackdown against drugs 对毒品的严厉打击
a crackdown on crime 对犯罪的严厉打击
a military crackdown 军事镇压
BrE /əˌbriːviˈeɪʃn/
NAmE /əˌbriːviˈeɪʃn/