She cut down the seedling with one chop.

她一刀就砍倒了。

I've been chopping away for half an hour but the tree is still standing.

这树我砍了半时, 但还未它砍倒。

Cutting down fruit trees for firewood is a case of killing the goose that lays the golden eggs.

砍倒果树当柴烧, 这是杀取卵。