Humming bird beats his wings almost 100 times per second.

蜂鸟每秒钟拍动翅膀近100次.

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Bird's body size, there is also a small humming bird ostrich.

鸟的体型大小不一, 既有很小的蜂鸟也有巨大的鸵鸟.

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This is a humming - bird moth.

这是蜂鸟科的天蛾.

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