Primitive ectoderm
[医] 原始外胚层, 胚盘外胚层
🧩 词语组成解析
primitive
['prɪmətɪv]
adj. 原始的;发展水平低的;落后的;[生物学]原生的;
n. 原始人;早期的艺术家（作品）;单纯的人：不世故的人;自学的艺术家;
prim第一，主要+itive形容词后缀 →原始的
n. 外胚层, 外层\\n[医] 外胚层
🗣️ 情景例句
Has poor voice, diction, grammar.
嗓音，措辞，语法很糟糕。
Curiosity killed the cat.
好奇心，惹祸根。
Alf did this for over two years and his fellow dustmen kept his secret Alf's wife has never discovered that she married a dustman and she never will, for Alf has just found another job.
两年多以来，艾尔弗一直这样，他的同事也为他保守秘密。 艾尔弗的妻子一直不知道她嫁给了一个清洁工，而且她永远也不会知道了，因为艾尔弗已找到薪职，