D-usnic acid
[化] 右旋地衣酸
🧩 词语组成解析
🗣️ 情景例句
That's five points also.
也是五分。
I hope we can conclude the transaction at this price.
希望我们能就此价格达成交易。
We really need that material, you know.
你知道，我们急着需要那批材料。