Hummingbird-蜂鸟

图片来源于网络

Hummingbirds are small, colorful birds with iridescent feathers. Their name comes from the fact that they flap their wings so fast (about 80 times per second) that they make a humming noise. Hummingbirds can fly right, left, up, down, backwards, and even upside down.

图片来源于网络

蜂鸟是一种体型很小、羽毛颜色靓丽的鸟类。当它们飞行时翅膀拍打的频率非常高（每秒钟可达80次），会发出像蜜蜂那样的嗡嗡声，因此被称为蜂鸟。它们可以右、向左、向上、向下、向后或者倒立着飞行。

图片来源于网络

If a hummingbird were the size of the average person, they would metabolize sugar fast enough that they'd need to drink more than one can of soda every minute to keep going.

你知道吗？如果一只蜂鸟像人这么大，需要每分钟喝一瓶汽水才能赶上它们代谢糖类的速率。