Chekenin
[医] 恰凯宁(南美丁香叶中的一种淡黄色结晶性成分)
🗣️ 情景例句
I hope nothing is wrong.
但愿没有事。
Dexterity comes by experience.
熟练来自经验。
Beware of methylated alcohol, which is very poisonous,
要提防甲基化酒精，那是剧毒的，