它们在跳跃时抓住丝壁，豆子的形状则有助于其滚动。

It grips on to the silk wall when it leaps. And the shape of the bean helps it roll.

youdao

它们在跳跃时抓住丝壁，豆子的形状则有助于其滚动。

It grips on to the silk wall when it leaps. And the shape of the bean helps it roll.

youdao