D-usninic acid
[化] 右旋地衣酸
🧩 词语组成解析
🗣️ 情景例句
We tested it last week on twelve- to fifteen-year-olds,
我们上一周曾在十二岁至十五岁的孩子中试过这项游戏，
That noise is driving me crazy.
那噪声吵昨我要发狂。
It has sailed across the Atlantic many times.
它已经多次横渡大西洋。