Essential amino-acid（）：n. - 完整释义与助记

🧩 词语组成解析

essential [ɪ'sɛnʃl]

adj. 基本的;必要的;本质的;精华的; n. 必需品;基本要素;必不可少的东西;

essent=be存在，本质 + ial ...的 → 必要的，本质的

amino

a. 氨基的\\n[医] 氨基

acid ['æsɪd]

adj. 酸味的;尖刻的;酸的;酸性的; n. <化>酸;酸味物质;

acid尖，酸，锐利 →酸；酸的，酸性的

Shopping vouchers are ofter a good means of attracting customers.

购物优惠券是吸引顾客的好方式。

What will you do this weekend?

这周末你将干什么？

It seems that there is a big waste pipe coming down from the town. Do you see it, over there?

好象有一条很粗的废水管从镇上通到海里。您看见了吗？在那边？

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