The preparation of sulfate heptahydrate and copper sulfate pentahydrate from calcined zincblende was investigated.用经高温煅烧后的闪锌矿石与稀硫酸反应制备七水硫酸锌和五水硫酸铜.Modified polymerized sulphate flocculating agent was made with ferrous sul...
The girl squinted at the photograph. She seemed to be nearsighted.女孩眯起眼睛看照片。她好像近视。He squinted his eyes and looked at the floor.他眯起眼看着地板。I squinted to adjust my eyes to the dimness.我眯起眼，努力适应黑暗的环境。...
这个提议绝不会理所当然地获得通过。This proposal is by no means a sure thing.总统完全赞同该提议。The president was in full agreement with the proposal.上个月提议的变动在3月份的预算中已经有所预兆了。The change proposed last month was foreshadowed in the March Budget....