1
crackdown on sth
crackdown 后接介词 on 引出被打击或镇压的对象，这是最常见搭配。
The government promised a crackdown on tax evasion.
政府承诺对逃税行为进行打击。
镇压；制裁；打击
先理解核心含义，再看它在真实句子里的用法。
镇压；制裁；打击
crackdown
The government promised a crackdown on tax evasion.
政府承诺对逃税行为进行打击。
Abruptly stern measures or disciplinary action; increased enforcement.
The city announced a new crackdown on illegal parking.
该市宣布对违法停车进行新一轮的整治。
Residents welcomed the police crackdown on street crime.
居民们欢迎警方对街头犯罪的打击。
The government has launched several crackdowns on counterfeit products this year.
政府今年已对假冒产品发起了多次打击行动。
crackdown 后接介词 on 引出被打击或镇压的对象，这是最常见搭配。
The government promised a crackdown on tax evasion.
政府承诺对逃税行为进行打击。
against 也可引出对象，语气更正式，常针对特定群体或运动。
The regime ordered a crackdown against the protesters.
该政权下令对抗议者进行镇压。
Not this
The government crackdown on corruption last year.
Use this
The government cracked down on corruption last year.
crackdown 是名词，不能单独作谓语；表达“镇压”这一动作时应用动词短语 crack down（两个词），汉语中“镇压”兼作名词和动词的用法容易造成此类词性混淆。
Not this
The police launched a crackdown of drug trafficking.
Use this
The police launched a crackdown on drug trafficking.
名词 crackdown 与打击对象之间应用介词 on，构成固定搭配 a crackdown on something；受汉语“对……的打击”影响，学习者常误用 of。
Not this
There was crackdown on street protests.
Use this
There was a crackdown on street protests.
crackdown 是可数名词，单数形式前需要加不定冠词 a；缺少冠词是受汉语“镇压”没有单复数概念影响而产生的错误。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
打击犯罪
The city launched a crackdown on crime last month.
该市上个月发起了打击犯罪的行动。
警方镇压
The police crackdown drew complaints from civil rights groups.
警方的镇压行动引起了民权组织的抱怨。
残酷镇压
The brutal crackdown on protests was widely condemned.
对抗议活动的残酷镇压遭到广泛谴责。
发起镇压
The government mounted a crackdown on tax evasion.
政府对逃税行为展开了打击。
面临镇压
The demonstrators faced a crackdown by security forces.
示威者面临安全部队的镇压。
军事镇压
The military crackdown left dozens dead.
军事镇压导致数十人死亡。
对…的严厉打压
The government's crackdown on illegal gambling was praised by local residents.
政府对非法赌博的严厉打压得到了当地居民的赞扬。
发起镇压；开展打击行动
Police launched a crackdown on drug trafficking in the city.
警方在该市开展了对毒品交易的打击行动。
残酷镇压
The brutal crackdown on peaceful protesters drew international condemnation.
对和平抗议者的残酷镇压遭到了国际社会的谴责。
Use crackdown naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
crack（猛烈击打）+ down（向下）→ 猛烈击打并压下去，联想‘镇压’。
语域：neutral 常见场景：执法、新闻报道、政府行动 该词通常用于正式或新闻语境，指官方对违法行为的严厉打击；日常口语中较少单独使用，多与 government、police 等搭配。
这些词都与 crackdown 末尾的 -down 拼写和发音对应，均含 /aʊn/。但 crackdown 的重音在前半部分 /kræk/，因此它们只与整个词的后半部分同音，不是整词押韵。注意 crack 读 /kræk/，与这些词的 /aʊn/ 不同；drown /draʊn/ 形近 down，但多一个 /r/。
Dictionary facts from ECDICT, WIKTIONARY.