chop down
phrasal verbchop something down
to make something, such as a tree, fall by cutting it at the base with a sharp tool 砍伐，伐倒（如树木） There are concerns over how quickly the forests are being chopped down. 人们对森林被砍伐的速度之快表示担忧。 The trees are being chopped down. 树木正在被砍伐。