In practice this is not the case since part of the sludge is not biodegradable.实际上不是这样,因为有一部分污泥不能为生物所降鲜.The rap oil - based lubricative additive is biodegradable and environment receivable lubricant.菜籽油基添加剂是一种可生物降解的环保的润滑...
他剑术高明.He is a good blade.哈姆莱特和雷欧提斯两个人都精通剑术.Hamlet and Laertes were known to excel at this sword play.除剑术和拳击之外,其他运动我不太喜欢.Bar fencing and boxing I had few athletic tastes....