We had to chop a way through the undergrowth.

我们必须在矮树林中砍伐出一条路来。

They are felling all the trees in this area.

他们在砍伐这个所有树木。

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）：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.

不别事情亲自到森林里来机械师或商人，一定林木拍卖才来；甚至有人愿出很高价钱来取得在砍伐者走以后拣拾木头权利。