These are just plain old molecules, but if you sniff those molecules up these two little holes in the front of your face, you will have in your mind the distinct impression of a rose.
这都是些最普通的分子了，但如果你用你脸上那两个鼻梁下的小洞洞 来闻闻那些分子的话， 你会在脑海记住那个印象非常深刻的“玫瑰”。