Plain clothes
n. 便衣, 便服, 便衣警察; 便装
📖 牛津释义
plain clothes
(esp of police officers), ordinary clothes, not uniform （尤指警察的）普通衣服, 便衣
The detectives were in plain clothes. 警探穿著便衣. `plain-clothes adj wearing plain clothes 穿便衣的
a plain-clothes detective 便衣侦探.
🧩 词语组成解析
plain
[plein]
n. 平原;平地;[纺织业]平针;朴实无华的东西;
adj. 平的;素的;清晰的;相貌平平的;
adv. 清楚地，明白地;平易地;[用以加强语气]显然;完全地;
vi. 发牢骚;诉苦;
clothes
[kloðz]
n. 衣服，衣物;寝具;
v. 穿（衣）( clothe的第三人称单数);给…提供衣服;（用语言）表达;覆盖;
🗣️ 情景例句
Take off the veil,
拿掉面纱
Tell me truth, don't beat around the bush.
实话告诉我，别兜圈子。
We must conclude from the work of those who have studied the origin of life,
我们必须从那些研究生命起源的人的工作总结出：