評論
打印
Wings
翅膀
Birds can fly because they have wings.
鳥兒因為有翅膀才能飛。
Each bird has differently shaped wings.
每種鳥的翅膀的形狀都不同。
How fast do birds fly?
鳥能飛得多快呢？
The speed of birds varies.
它們的速度各不相同。
Pigeons fly at a rate of about 35 to 60 miles per hour.
鴿子的飛行速度約35-60英里（約56.3-96.7千米）每小時
And hawks at a rate of about 180 miles per hour.
而鷹的飛行速度約180英里（約289.7千米）每小時。
However, there are some birds which can't fly at all.
然而，有些鳥兒根本就不能飛。
They are penguins and ostriches.
它們就是企鵝和鴕鳥。
