在树根处砍一个缺口，缺口的深度应该是树木直径的80%，其角度大约为70度。

Cut a 70-degree notch into the tree with a length of 80 percent of the trunk’s diameter.

youdao

在树根处砍一个缺口，缺口的深度应该是树木直径的80%，其角度大约为70度。

Cut a 70-degree notch into the tree with a length of 80 percent of the trunk’s diameter.

youdao