Grammar Note
作“嘴唇”或“器皿边缘”解时是可数名词，常用复数 lips；作“顶嘴”解时是不可数名词，用于 give someone lip。
嘴唇
先理解核心含义，再看它在真实句子里的用法。
嘴唇
either of the two fleshy parts that form the edges of the mouth
She bit her lip nervously while waiting for the test results.
她在等考试成绩时紧张地咬着嘴唇。
嘴部开口周围的两片肉质突起之一。
Either of the two fleshy protrusions around the opening of the mouth.
嘴唇
either of two fleshy folds of tissue that surround the mouth and play a role in speaking
身体上类似嘴唇的部分,如伤口边缘或阴唇。
A part of the body that resembles a lip, such as the edge of a wound or the labia.
(植物)二唇形花冠或花萼的唇瓣
(botany) either of the two parts of a bilabiate corolla or calyx
He licked his lips before taking a bite of the pizza.
他舔了舔嘴唇，然后咬了一口披萨。
The singer painted her lips bright red for the show.
这位歌手为演出把嘴唇涂成了鲜红色。
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作“嘴唇”或“器皿边缘”解时是可数名词，常用复数 lips；作“顶嘴”解时是不可数名词，用于 give someone lip。
该词属于 Oxford 核心词汇，值得优先掌握常见搭配和句型。
Collins 词频等级为 3，建议结合例句记忆，而不是只背中文释义。
Dictionary facts from AI_FALLBACK, DICTIONARY_API_DEV, ECDICT, WIKTIONARY.