Once its impurities had settled, the oil could be graded...一旦杂质沉淀下去，油就可以分级了。The separation and determination of the primary impurities of diflubenzuron by liquid chromatography were carried out.通过反相液相色谱方法往甲醇与水的混合流动相中加入适当...
他们现在还得靠微薄的收入过日子。They are still having to live on very low incomes.老人往往靠十分微薄的收入艰难度日。Old people often subsist on very small incomes.他靠微薄的工资无法养家.He could not support his family on his meager salary....
孩子们的叫喊声把我从午睡中惊醒.The children's shouts woke me out from my afternoon sleep.她把午睡的孩子们唤醒.She aroused the children from their nap.总统正在午睡.The President is still napping....