...parents who have had the onerous task of bringing up a very difficult child.曾经辛辛苦苦地养育过任性难缠的孩子的父母亲My household duties were not particularly onerous.我的家务活并不繁重.Shall there be a free port in one State and onerous duties i...
...the art of distilling rose petals...提取玫瑰花瓣精油的技巧Air leakage of a stopper will cause fire during distilling combustibles.蒸馏易燃物时塞子漏气引起火灾.More ammonium sulphate solution is being recovered in the process of distilling oil...