You say this is what thing!

你说这是什么玩意儿！

youdao

What thing is lighter than air that any person can hold in a second or in a minute but never in an hour?

什么东西比空气还轻，任何人只能抓住一秒或一分钟但是不能抓住一小时？

youdao

therefore it shall be, that what thing soever thou shalt hear out of the king's house, thou shalt tell it to Zadok and Abiathar the priests.

你在王宫里听见什么，就要告诉祭司撒督和亚比亚他。

youdao

"In the end,schools ought to do what's the right thing for their students, first and foremost."

VOA: special.2010.10.07

Thermodynamics is asking you, what work does this thing do on the surroundings or the surroundings do on the system?

热力学在问你们，到底是系统对环境做功,还是环境对系统做功？

麻省理工公开课 - 热力学与动力学课程节选

To figure out even what this thing is, let alone how to use it properly. So, you know, I'm sympathetic.

就连认出这是什么东西（都很困难），更别说正确应用它了，所以我很同情这点。

经常犯的失误 - SpeakingMax英语口语达人

"Art is like tech--you are always trying to hash through what is the new, new thing and what is a rehash of the last new, new thing, " says Singer.

FORBES: Magazine Article

So what one thing can make a difference in helping you select the right funds?

FORBES: The Trick to Picking 401(k) Funds

Now we're fooling around in the dark trying to figure out what this thing is.

WSJ: The Director & the Techie