The river is navigable by vessels of up to 90 tons.90吨以下的船只可以从这条河通过.The lower reaches of the river are navigable for steamers.这河的下游能够行驶轮船.The river is navigable now.河开了....
...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...