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...
原始人用石块和骨头做原始的工具.Primitive man made himself primitive tools from stones and bones.他们用石块压住箱子,把它沉到海里去.They weighed the box down with stones and dropped it into the sea.基督教殉道者被用石块击毙.Christian martyrs were stoned to death....
Even the survey's most rabid critics acknowledge the utility of this kind of data.连该调查最狂热的批评者也承认这类数据的用处.He would acknowledge with perfect ingenuousness that his concession had been attended with such partial good.他坦...
He defaulted in his payments on the loan.他没有按期偿还贷款。The player defaulted in the tournament because of her injury.在这次循环赛中,这位运动员由于受伤而弃权.He defaulted on his payments for support of the child.他拖欠孩子的抚养费.The first warning signa...
With this parting admonition, he left Clyde to his thoughts.这样临行前劝告了一番, 他就走了,留下克莱德自己想心事.The youth rejected admonition and held to his demand.青年不听劝告,仍然坚持自己的要求.Isabel listened with extreme respect to this admonition.伊莎贝尔非常...