必须制定法律禁止大量砍伐树木。

Laws must be made to ban the massive cutting down of trees.

youdao

必须制定法律禁止大量砍伐树木。

Laws must be made to ban the great number of cutting down trees.

youdao

必须制定法律禁止大量砍伐树木。

Laws must be made to ban the great number of cutting down trees.

youdao