arrest 两个层次：① 最常见义：逮捕，拘留（arrest sb. for sth. = 因某事逮捕某人；under arrest = 被捕）；② 阻止，遏制（arrest the spread/decline = 阻止扩散/下滑，书面正式）。固定表达：under arrest（处于被捕状态：you are under arrest = 你被捕了）；make an arrest（逮捕某人）；place/put sb. under arrest（逮捕某人）；cardiac arrest（心脏骤停，医学术语）；house arrest（软禁）；citizen's arrest（公民逮捕）。注意：arrest 名词可数（make several arrests = 逮捕了数人）。
释义
1
v. / n.逮捕，拘留
Three suspects were arrested in connection with the theft of artworks valued at over five million pounds.
三名嫌疑人因涉嫌窃取价值逾500万英镑的艺术品而被逮捕。
2
v.阻止，遏制（某进程，书面）
Urgent policy measures are needed to arrest the decline in biodiversity before irreversible damage is done.
需要紧急政策措施来遏制生物多样性的下降，以防不可逆转的损害发生。
语感
arrest sb. for（因某事逮捕）；under arrest（被捕）；cardiac arrest（心脏骤停）；比喻：arrest the decline（遏制下滑）
逮捕，拘留（法律义）阻止，遏制（书面比喻义）
法律相关搭配：arrest sb. for sth.（因某罪逮捕：arrested for murder = 因谋杀被捕）；under arrest（被捕：placed under arrest）；make an arrest（警方逮捕行动）；wrongful arrest（错误逮捕）；arrest warrant（逮捕令）。医学：cardiac arrest（心脏骤停；suffer a cardiac arrest = 心脏骤停）。其他：house arrest（软禁：under house arrest = 处于软禁状态）。比喻义（书面正式）：arrest the spread/decline/growth（阻止扩散/下滑/增长）。
陷阱
⚠️arrest sb. for sth.（for 表原因，非 because of）
The activist was arrested for allegedly inciting public disorder during the demonstration.
✗
arrested for = 错误，应用 arrested because of（因为…被捕）
✓
arrest sb. for sth./doing（因某事逮捕某人）是固定结构；for 表「原因/罪名」（charged for/arrested for = 以…为由被逮捕）；because of 可以在从句中使用，但 arrest 直接接 for 是标准法律语言；此句完全正确
这名活动人士因据称在示威期间煽动公众骚乱而被捕。（arrested for = 因…被逮捕，for 正确，表示罪名/原因）
⚠️cardiac arrest（心脏骤停）vs. heart attack（心脏病发作）
✗
The patient suffered a cardiac arrest while jogging, which is caused by blocked arteries reducing blood flow to the heart.
The patient suffered a heart attack while jogging, which was caused by blocked arteries reducing blood flow to the heart.
患者在慢跑时心脏病发作，原因是动脉堵塞导致流向心脏的血液减少。
近义辨析
arrestvsdetain
arrestarrest（逮捕，含正式法律程序：arrest sb. for = 以…罪名逮捕）detaindetain（拘留，扣押，强调「暂时阻止离开」，可不含逮捕罪名：detain for questioning = 以询问为由拘留）
Two men were arrested on suspicion of conspiracy to commit fraud and were held overnight for questioning.
两名男子因涉嫌共谋欺诈而被捕，并被留置过夜接受询问。
Border officials have the authority to detain travellers for up to four hours while verifying their documentation.
边境官员有权扣留旅客最多四小时，以核实其证件。
写作加分
✨ 加分词
替换：stopslow downprevent
环境保护话题公共健康议论文经济政策话题
普通
Governments need to stop the decline in biodiversity.
政府需要阻止生物多样性的下降。
加分 ✨
Without immediate and coordinated international action, it will be impossible to arrest the accelerating decline in global biodiversity that threatens entire ecosystems.
如果没有立即且协调一致的国际行动，将无法遏制威胁整个生态系统的全球生物多样性加速下滑。
为什么更好：arrest the decline 比 stop the decline 更书面正式；accelerating（加速的）增加紧迫感；threatens entire ecosystems 展示影响的宏观维度