馅饼的做法大全:脑筋急转弯 Why do birds fly south?

来源：百度文库 编辑：杭州交通信息网 时间：2024/05/01 05:39:00

it's impossible for them to walk to south.

Because it's too far to walk.
因为走着去太远了 呵呵

because they can;t walk south

yes
the upers you are right

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