Lathosterol
7-烯胆(甾)烷醇
🗣️ 情景例句
Welcome to China. May I have a look at your customs declaration?
欢迎来中国。我可以看一下您的入境申请报表吗？
How long will you be away?
你将离开多久？
What about this one?This one's got a label.
这只是不是？这只箱子有张标签。