Concrete walls typically feature a tall wall on a horizontal foundation, resembling an upside-down "t".

混凝土墙，典型的特征是横向的基础一高的围墙，类似于一个倒“T”型。

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Remember that this molecule, let's look at the blue one wouldn't be the same if I turned it upside down.

让我们记住,如果我把蓝色的,单链倒过来,那么这条链和原来不一样了

耶鲁公开课 - 生物医学工程探索课程节选

It wouldn't be the same if I turned it upside down because the carbons - the rings here, the pentose's would all be turned over, the chemistry would look different and the sequence of bases would look different.

记住单链倒过来,就和原来不一样了,这是因为碳原子和糖环结构,戊糖会翻转,使得这个化学结构看起来不一样了,碱基的顺序也不一样了

耶鲁公开课 - 生物医学工程探索课程节选

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

And if there's anyone out there who still doesn't believe this constitutes a full-blown crisis, I suggest speaking to one of the millions of Americans whose lives have been turned upside down because they don't know where their next paycheck is coming from.

WHITEHOUSE: Presidential Press Conference

While docking the phone into or pulling it out of the PadFone Station is hardly a challenge, there's some sort of magic that keeps the phone tucked into the bay no matter how hard our pals shook the tablet upside down (please don't try this at home) -- the geared rubber grip along the two sides of the bay are somehow responsible for this.

ENGADGET: ASUS PadFone 2 hands-on in Taipei (updated with video)

The Gulf may remain the preserve of starchitects and glossy art fairs, but the Arab Spring artists have shown us what it means to make art that isn't just outside the box, but turns the box upside down.

WSJ: Taking It to the Street | The Shift