他们有时只好砍树当柴烧。

Sometimes they have to chop down a tree for firewood.

他自己砍树、剥皮、劈成木材。

He felled, peeled and hewed his own timber.

他砍树的时候砍伤了腿。

He gashed his leg while felling trees.

杰克正在砍树。

Jack is making a hack at the tree.

不过，你可不会看到他们在森林里砍树。

However, you won't find him in the forest chopping down trees.

国际上为了加速这种转变，主要提出了REDD理念（减少森林砍伐和退化产生的排放）：给发展中国家的居民一笔钱，让他们别砍树。

The main international effort to speed it up is an idea known as REDD ( Reducing Emissions from Deforestation and Forest Degradation), which pays people in developing countries to leave trees standing.

按照这样的定义，发明家、美国的开国先贤之一本杰明•富兰克林（Benjamin Franklin）就是典型的黑客——尽管在他的年代这个词的含义和砍树有关。他从来不申请专利，因为他认为人类所有的知识都应该免费。

Under this definition Benjamin Franklin, inventor and one of the founding fathers of the US ( who never filed a patent because he believed all human knowledge should be free) is an archetypal hacker-even though the word had something to do with cutting down trees in his day.

我弟弟用斧头砍树。

My brother used an ax to cut down the trees.

你要砍树干来砍倒这颗树。

You need to chop down the tree at its trunk.