使铜氧化变成氧化铜.Oxidize copper to copper oxide.硫化铜和氧化铜也是很抢眼的替代材料.Copper sulfide and copper oxide were also attractive candidates.氧化铜是由铜和氧组成的.Copper oxide is made up of copper and oxygen....
While Karen was speaking, Josie lifted down two lengths of steel channel from the van's interior.凯伦说话的时候, 乔西从汽车内部取下两根钢槽.In an ideal world Karen Stevens says she would love to stay at home with her two-and-half-year ...
His writing benefits from the shade of Lincoln hovering over his shoulder.他的写作得益于他感到已故的林肯一直在他身后激励着他。Bessie, resplendent in royal blue velvet, was hovering beside the table.贝茜身穿华丽的深蓝色天鹅绒衣服，在桌旁徘徊。The helicopter was hoverin...