Acrbonic acid derivative
[建] 碳酸衍生物
🧩 词语组成解析
derivative
[di'rivətiv]
n. [数]导数，微商;[化] 衍生物，派生物;[语]派生词;
adj. 衍生的;导出的;拷贝的;
🗣️ 情景例句
You haven't been around much lately.
最近你在家的时候不多。
When will he come to see you?
他什么时候来看你？
The seed was sprayed over the ground in huge quantities by aeroplanes.
飞机把这种草籽大量地撒播在地上。