“旁听”的英语可以翻译为：e a visitor at a meeting, in a school class, etc.，attend (a lecture) in the capacity of an associate student，be present (at a conference) as a observer，audit ...
Methane gas does collect in the mines around here.周围的矿井里的确有沼气聚积。They requested sappers to mend bridges or remove mines.他们要求坑道工兵修桥或拆雷。There was widespread picketing of mines where work was continuing.凡是在继续开采的矿区，都设置了纠察队。...
可以使用超热蒸气改进其性能.We can improve its performance when we use super - heated steam.研制了超热电子 磁谱仪,介绍了谱仪的工作原理 、 设计思想 、 结构和主要技术指标.The electron magnetic spectrometer was developed and its principle, ( designing ) idea, structure an...