It spends its time hovering about upside down. The rotating blade is its foot.

它不停地上上下下，旋转着的像叶片一样的是它的足。

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Some follow each other in solemn parades, but others swirl about, sideways and upside down.

庄严的游行队伍中有的人跟随彼此，而有些则原地打转，侧着身子，上下颠倒。

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If you procrastinate, whine, and complain about the hard situations in life, the waves of difficulties will roll you upside down.

如果你犹豫不决、悲悲戚戚、牢骚满腹地抱怨生活的艰难，那么一浪又一浪的困境将会让你摔个底朝天。

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Unless you take the things that you don't like about this world and you flip them upside down and you can start that today.

除非你把在这世上讨厌的事物,翻转过来，你们可以从今天开始。

哈佛公开课 - 幸福课课程节选

Talk about having priorities upside down.

FORBES: Fact and Comment

The SUV hit a guardrail in an industrial section of town and landed upside down in about 5 feet of water, filling up within minutes, State Highway Patrol Lt.

NPR: Owner: SUV In Ohio Crash That Killed 6 Was Stolen

Listen to my Morning Edition piece to hear how Charles Darwin and his butler dropped asparagus into a tub and how Darwin and his oldest son studied dead pigeons floating upside down in a bowl to test ideas about evolution.

NPR: Charles Darwin and the Racing Asparagus