灯光照在满是灰尘的墙上，反射回苍白的冷光。Lights reflected off dust-covered walls creating a ghostly luminescence.风猛地刮起一阵灰尘，将它吹往内陆。Wind caught the sudden puff of dust and blew it inland.蒙了一层灰尘后颜色就很难看清了。It was hard to see the colours under th...
The gas , which is sulphur - free , contains 89 - 99 % methane, up to 6 % ethane, and 3 % propane.天然气不含硫, 含甲烷88-99%, 乙烷6%和丙烷3%.The method and the condition of separation epoxy ethane from dihydric alcohol are described.介...
Weatherby didn't deign to reply.韦瑟比不屑回答。He doesn't deign to talk to unimportant people like me.他不肯屈尊和像我这样不重要的人说话.I fear my Julia will not deign my lines.我担心我的朱莉亚不会欣然接受我的书信....