Expound magnesium metallurgy with ferrosilicon process and calcium metallurgy with aluminothermic process by contracting technological conditions.通过工艺条件对比分析,阐明了硅热法炼镁与铝热法炼钙两者工艺过程、设备条件基本相同....
过去有成群结队的年轻人骑着摩托车四处游荡。There were gangs of kids on motorbikes roaming around.他在墨西哥城到处游荡，磨坏了鞋子。He wore out his shoes wandering around Mexico City.她会整天在街角附近游荡.She would spend the day hanging round street corners....
在边界那边的埃塞俄比亚，情况也大致相似。It's a similar picture across the border in Ethiopia.埃塞俄比亚的人均石油耗费量几乎是全世界最低的。Ethiopia has almost the lowest oil consumption per capita in the world.在怀俄明州，消防员还在为扑灭这两场大火而奋战。In Wyoming, firefighters ...
一群鸟儿已经齐声唱起了欢快的晨曲。A flock of birds was already warbling a cheerful morning chorus.“是的，”他们齐声说。"Yes," they said together.“嗨，”他们齐声招呼道。"Hi," they chorused....