Looking back, she feels she should never have hung up her backpack.回首过去，她觉得自己真不该放下背包不再徒步旅行。He squirmed out of the straps of his backpack.他扭动身体，挣开背包的肩带。This suitcase, and a backpack.这个手提箱和背包....
A backpack is a Viking helmet - neither should be a crowed train.背包像维京海盗的头盔一样,不应该带上拥挤的火车.He squirmed out of the straps of his backpack.他扭动身体，挣开背包的肩带。Looking back, she feels she should never have hung up her backpack.回首过去...
依照庞先生的指示, 他们相互紧拥, 合上眼,数数数到十.Following Persky's instructions, they held each other tight ? ly, closed their eyes and counted to ten.比利还不会数数。Billy can't count yet.数数看一行有多少棵树.Count and see how many trees there are...
There was a crescendo of parliamentary and press criticism.来自议会和新闻界的批评越来越多。The crescendo of noise was con-tinuous.噪声越来越大。Voices rose in a crescendo and drowned him out.人们讲话的声音越来越大，盖过了他的声音。...
One of the oldest method of salt removal is dialysis.透析是最古老的去盐方法之一.After dialysis and lyophilization , it can be detected by immunological methods.经过透析和冷冻干燥 、 可用免疫学方法测算.The dialysis principle can be used for demineraliza...