Ethyloic-
[化] 羧甲基; 侧链上的羧甲基
🗣️ 情景例句
This is Jack Davis.
我就是Jack Davis。
She made a notable contribution to science.
她对科学做出了杰出的贡献。
Has he had anything to eat this morning?
他今早吃了什么东西吗？