Transfectant
轉(zhuǎn)染子
??? 情景例句
it's ... it's important for Michelle to see us together more often.
讓 Michelle看到我們更常在一起是……是很重要的。
No. I have been away on vacation.
是呀，我休假去了。
On his arrival he was sold to a farmer and worked in the fields.
一到美國，他就被賣給了一個農(nóng)場主，到地里干活。