Sometimes they have to chop down a tree for firewood.

有时他们不得不砍倒一棵树来做木柴。

《柯林斯英汉双解大词典》

If I had eight hours to chop down a tree, I would spend six hours sharpening my axe.

假如我只得八小时要把一棵树砍倒，我就会花六句钟把斧头磨好。

youdao

Give me six hours to chop down a tree, and I will spend the first four sharpening the axe.

给我留个小时砍掉一棵树，那么我会花前面的四个小时来磨斧子。

youdao

But where it should have seen the forest, it found only a single tree to chop down.

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