adj.生物所能分解的
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。
Waste can be segregated as biodegradable and nonbiodegradable. 垃圾可分为可生物降解的和不可生物降解的两类。
