Add 20 mg. of diatomaceous earth filter aid per liter of solution.对每升溶液加入20毫克硅藻土助滤剂.Acid - washed, flux - calcinated diatomaceous earth is often used.通常使用酸洗的, 通量煅烧硅藻土.Diatomaceous earths are the skeletal remains of the t...
I think the reaction has been a little overheated.我认为这一反应有些过激。They became overheated nationalists, militarists, and they were out to conquer.他们变成了过分狂热的民族主义分子和军国主义分子，并想要征服别国。The system overheated and filming had to stop.系...
这家公司是计算机技术的开拓者。The company is a pathfinder in computer technology.苹果是早期殖民地开拓者来的时候带过来的。The apple was brought over here by the colonists when they came.他们 -- 挑战者号全体机组人员是开拓者.They, the members of the Challenger crew, were pi...