Nivalic acid
[化] 地衣酸
🧩 词语组成解析
🗣️ 情景例句
Men and women, young and old, to give us their time.
不管男女老幼 ，请他们贡献时间。
If you cannot bite, never show your teeth.
不能打仗，切莫出兵。
I'd like you to meat Dr Zhang.
我想让你见见张先生。