当树木长大枝叶茂盛时,它们可以起到隔声的作用.Trees also serve as sound Barriers when full grown and leafed out.实施减轻环境影响的措施,包括建造隔声屏障和广泛植树.Environmental impact abatement measures including noise barriers and extensive planting.本文介绍一种新型电动机隔声罩.Th...
托德气愤地摇了摇头，然后把那卷绳子往肩上一搭。Tod shook his head angrily and slung the coil of rope over his shoulder.迈克要求乔治和他交换位置，让他和托德同坐一辆车。Mike asked George to trade places with him so he could ride with Tod.托德的笑声里带了点歇斯底里的音调.A little note o...