Grammar Note
仅用作定语
较年幼的；年纪较小的（尤指兄弟姐妹）
先理解核心含义，再看它在真实句子里的用法。
较年幼的；年纪较小的（尤指兄弟姐妹）
younger, especially of a sibling
My kid brother is learning to swim this summer.
我弟弟今年夏天在学游泳。
常用于 kid brother/sister；非正式
He often walks his kid sister to the library.
他常常走路送妹妹去图书馆。
My kid brother always asks for my advice about school.
我弟弟总是就学校的事向我请教。
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仅用作定语
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 4，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.