Nicotin
n. 烟碱
🗣️ 情景例句
He isn't likely to win.
他不可能赢。
He who rides a tiger is afraid to dismount.
骑虎者难下。
He has pointed out that the tree is a useful source of income as tour-ists have been coming from all parts of the country to see it.
他指出，由于人们从全国各地纷纷前来参观这棵树，