许多人认为树根是向下生长的，但实际上树的大部分根系是向四周生长的 -它们能穿过厚厚的土向四周伸展，树多高，根就伸多远。

Many people think that roots grow downward, but actually most of roots grow in all direction after they through the heavy earth. How tall the tree and how far the roots extend.

youdao

许多人认为树根是向下生长的，但实际上树的大部分根系是向四周生长的 -它们能穿过厚厚的土向四周伸展，树多高，根就伸多远。

Many people think that roots grow downward, but actually most of roots grow in all direction after they through the heavy earth. How tall the tree and how far the roots extend.

youdao