那演说者同时得到喝彩声和嘘声.The speaker was received with a mixture of applause and hisses.听众中爆发出一片欢呼喝彩声.The audience broke into rapturous applause.那位年轻歌手首场演出结束时,台下响起了雷鸣般的喝彩声,使她又惊又喜.The young singer was pleasantly surprised when wave...
铜是热和电的良导体.Copper is a good medium for the conduction of heat and electricity.木头是热和电的不良导体.Wood is a poor conductor of heat and electricity.铜是电的良导体.Copper conducts electricity well....