Polyhydric acid
[化] 多元酸
🧩 词语组成解析
a. 多羟的；[有化] 多羟基的
🗣️ 情景例句
Good-bye, and thanks for bringing Gemma in.
再见，谢谢你们把Gemma送来。
Many great writers were not appreciated fully while they were alive.
许多伟大的作家当他们活着时没有被充分重视。
It's much cheaper to camp than to stay in a hotel.
露营比住旅馆要便宜多了。