Anarchism is a term describing a cluster of doctrines and attitudes whose prin * uniting feature is the belief that government is both harmful and unnecessary .

无政府主义这个词描述的是一堆理论和态度，它们的主要共同点在于相信政府是有害的，没有必要的。

A prin cipal reason was that most trees , unlike annual plants , cannot readily be propagated from cuttings .

一个主要的原因就是不像一年生植物，大多数林木经过砍伐之后，不能马上繁殖。