As it flies off,the Monarch's feet hook out the pollen and carry it to the next flower蝴蝶飛走時順帶把花粉帶到下一朵花上

fly off飛離(揮發)

Her hat fly off and landed up in the river.

她的帽子讓風刮跑落到河里了。

Can't you fly off with the rest of the team?

難道你不能與其他隊員一起乘飛機走嗎?

They may be small, but they play a very important role keeping nectar well guarded at the very bottom of their long stems.花雖然很小但扮演了保護長梗底部花蜜的重要角色

play a role起作用；扮演角色

Computers play an important role in our daily life.

計算機在我們的日常生活起著重要的作用。

He was invited to play a role in this TV play.

他被邀請在這個電視劇里扮演一個角色。

it is the only bird capable of reaching this energy-rich food.是唯一有辦法取得這種高能食物的鳥兒

capable of能夠

He is capable of great villainies.

他能干出極壞的事情。

A man driven by jealousy is capable of anything.

嫉妒心可使人什么都做得出來。