名詞 crackdown:

1. severely repressive actions

1. A crackdown on crime.
   對犯罪進行制裁
2. Campaign aiming at crackdown on porn, drug and gambling is carried out thoroughly in China.
   一場嚴厲打擊色情，毒品和賭博的運動正在全國展開。

crack.down

n.（名詞）
An act or example of forceful regulation, repression, or restraint:
制裁：采取嚴厲措施、鎮(zhèn)壓、約束的行為或?qū)嵗?/br>例句：
a crackdown on crime.
對犯罪進行制裁