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wear a raincoat
You should wear a raincoat in the rain.
下雨时你应该穿雨衣。
雨衣；防水外套
先理解核心含义，再看它在真实句子里的用法。
雨衣；防水外套
a waterproof coat worn to protect against the rain
You should wear a raincoat in the rain.
下雨时你应该穿雨衣。
防雨穿的防水外套；(引申)任何具有此目的的外套或夹克。
A waterproof coat to be worn in the rain; (loosely) any coat or jacket with this purpose.
防水外套
a water-resistant coat
A raincoat is essential on a rainy day.
雨衣在雨天是必不可少的。
Don't forget to pack your raincoat for the trip.
别忘了为这次旅行打包你的雨衣。
She was protected by her raincoat during the storm.
她在暴风雨中受到雨衣的保护。
You should wear a raincoat in the rain.
下雨时你应该穿雨衣。
He put on his raincoat before going out.
他在出门前穿上了雨衣。
She took off her raincoat when she entered the room.
她进屋时脱下了雨衣。
Not this
I need raincoat because it's raining.
Use this
I need a raincoat because it's raining.
雨衣是可数名词，单数形式前必须加冠词 a/an。
Not this
You should raincoat before going out.
Use this
You should wear a raincoat before going out.
raincoat 是名词，不能用作动词；应使用动词 wear 搭配名词 raincoat。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
穿雨衣
You should wear a raincoat when it rains.
下雨时你应该穿雨衣。
穿上雨衣
He put on his raincoat before going out.
他出门前穿上了雨衣。
带雨衣
Don't forget to take a raincoat with you.
别忘了带雨衣。
轻便雨衣
She packed a lightweight raincoat for the trip.
她为旅行打包了一件轻便雨衣。
带帽雨衣
A hooded raincoat keeps your head dry in the rain.
带帽雨衣能让你在雨中保持头部干燥。
发长 /eɪ/ 音 (如 rain, wait)
Use raincoat naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
联想：rain（雨）+ coat（外套）→ 下雨时套上的防水外套 raincoat。
语域：neutral 常见场景：日常对话、雨天出行、服装购物 raincoat 是中性常用词，日常口语和书面语都适用，多用于描述雨天穿的防水外套。
这些词都以 -oat 结尾，发音含 /oʊt/，与 raincoat 中的 -coat 发音相同。注意：它们并不与整个 raincoat 押韵，因为 raincoat 的重音在 rain (/reɪn/) 上。
Dictionary facts from ECDICT, WIKTIONARY.