D-usninic acid
[化] 右旋地衣酸
🧩 词语组成解析
🗣️ 情景例句
He lost his money due to his own carelessness.
由于大意，他丢了钱。
He who has not tasted bitter knows not what sweet is.
不吃苦中苦，哪知甜中甜。
It looks like the shipping company did this.
应该是货运公司造成的吧。