研制了一种性能优异的易切削铋黄铜来替代有毒的铅黄铜.An environmental friendly Bi - brass with cutting - free and excellent properties was developed to substitute for Pb - brass....
“那闹哄哄的究竟是在做什么？”她问道。“是流行音乐节，”他回答说。"Whatever is that row?" she demanded. "Pop festival," he answered.婚礼的那天早上，我们家闹哄哄的。It was bedlam at our house on the morning of the wedding.酒吧里一群闹哄哄的家伙a rowdy crowd at the pub...
他也谦和的说, “ 小朋友好呀, ”" How d'you do, friend ? " he answered amiably.他― ― 那位温良谦和的人 ― ―甚至也想用随便什么,只要是不礼貌的语言,来把自己的愤慨表达出来.He even - that mild and courteous man - was inclined to express himself in anything but courteous ter...