We had to chop a way through the undergrowth.

我必须矮树林中砍伐出一条路。

They are felling all the trees in this area.

砍伐这个区所有树木。

Deforestation (disafforestation) The permanent removal of forests, especially by means of logging for commercial timber and clearing for agriculture and human settlement.

砍伐森林（滥伐）：为了商业木材使用，农田开垦以及人类建筑用永久性移除森林。

Mechanics and tradesmen who come in person to the forest on no other errand, are sure to attend the wood auction, and even pay a high price for the privilege of gleaning after the woodchopper.

不是为了别事情亲自到森林里机械师或商人，一定是为了林木拍卖；甚至有人愿出很高价钱取得砍伐者走了以后拣拾木头权利。