D-usnic acid
[化] 右旋地衣酸
🧩 词语组成解析
🗣️ 情景例句
How's that?
这是怎么一回事？
Pain is forgotten where gain follows.
好了伤疤忘了痛。
On Christmas Eve the night before Christmas Day children all over Britain put a stocking at the end of their beds before they go to sleep.
在圣诞节前夜圣诞节前一天夜里全英国的孩子们在睡觉前，都把他们的长统袜挂在床脚边。