D-usnic acid
[化] 右旋地衣酸
🧩 词语组成解析
🗣️ 情景例句
He is making good progress after his operation.
他动过手术后病情大为好转。
Sorry, it's broken. You have to use the stairs.
对不起，它坏了，你只能走楼梯了。
Except for one or two places such as Zermatt and Chamonix, which had rapidly become popular,
除了泽曼特和夏蒙尼等一两个很快出了名的地方外，