Polyoxyethylation
聚氧乙烯化作用, 环氧乙烷加成作用
🗣️ 情景例句
And guess what?
你们猜怎么着？
Comets to appear
彗星出现了
yet following her regular practice she had shut them before going out.
而她记得在出门买东西前，她按老规矩是把房门一一锁上的。