Essential element
[化] 必需元素; 生命必需元素
?? 詞語(yǔ)組成解析
essential
[?'s?n?l]
adj. 基本的;必要的;本質(zhì)的;精華的;
n. 必需品;基本要素;必不可少的東西;
essent=be存在，本質(zhì) + ial ...的 → 必要的，本質(zhì)的
element
['?l?m?nt]
n. [化]元素;要素;原理;[電]電阻絲;
??? 情景例句
I want to cash this check, please.
我想把這張支票換成現(xiàn)金。
I think this is a fake diamond.
我想這是假鉆石。
One hour and seventeen minutes passed and we had not even covered half the distance.
1小時(shí)17分過(guò)去了，走了還不到一半路程。