Mitosin
[核]分裂激素
??? 情景例句
because she's had to go to Chicago on a business trip and can't leave till tonight.
因為她得到芝加哥出差，而且要到今晚才能脫身。
No garden without its weeds.
有利必有弊。
They leave unwanted objects in drawers, cupboards and attics for years,
他們在抽屜里，碗柜中、閣樓上堆放著一些不用的東西，一放就是好幾年，