Unfortunately, bad news has come hard on the heels of good.很遗憾，好消息的后面紧跟着就是坏消息。He stood a few moments, rocking back and forwards on his heels.他站了一会儿，踮着脚跟前后摇晃。They were bunching up, almost treading upon each other's h...
Susan was on the wing doing things to get ready for her trip.苏珊忙碌着为旅行做准备.Why aren't you out at my house helping Melly get ready for the surprise party? "你怎么没在我家里帮媚兰准备那个秘密的宴会 呢 ?I have a lot of work to do to get read...
抑制剂和促进剂能影响氧化速率.Inhibitors and promoters may affect the rate of oxidation.抑制剂和促进剂能影响氢化速率.Inhibitors and promoters may affect the rate of oxxidution.这种解释在指导改进粘结促进剂的研究上是有成效的.This explanation has been useful in guiding the s...