D-usnic acid
[化] 右旋地衣酸
🧩 词语组成解析
🗣️ 情景例句
No news is good news as far as I'm concerned.
我觉得没有消息就是最好的消息。
Make all you can, save all you can, give all you can.
尽力而为，尽力节约，尽力施舍。
I'd prefer them not to play too loudly at the beginning.
我比较喜欢开始时的演奏不要太吵