Turns out, according to Daniel Cook, a historian of childhood consumerism, it was popularised as a marketing trick by clothing manufacturers in the 1930s.

研究儿童消费主义的历史学家丹尼尔·库克认为，这其实是上世纪30年代作为服装制造商的一种营销手段流行起来的。

youdao

THE next trick is to find a way out of Wamena.

接下来要解决的问题是找到一个离开瓦梅纳的办法。

youdao

The trick here, though, is to get out of bed and shower promplty post-pleasure-sesh.

虽然，在这里，这个窍门是为了起床，迅速愉快的淋浴。

youdao

and tamed them with the magic trick of staring into all their yellow eyes with out blinking once.

VOA: special.2009.10.05

And in particular, I'm going to cheat slightly I'm going to use a little bit of abusive mathematics, but I'm going to show you a trick to figure it out.

尤其要说明的是,我会有一点不属实在里面,我会滥用一点数学，但是,我会教会你们这个小把戏的。

麻省理工公开课 - 计算机科学及编程导论课程节选

And the trick to a puzzle box is there's a simple way to get out but you have to kind of pull on something, some special lever, to make it pop open.

这个谜笼的设计是这样的,只要小猫拉动一个东西,它就能够逃出去，拉动一个特殊的杠杆，迷笼就会打开。

耶鲁公开课 - 心理学导论课程节选

And again, whatever you can do to trick yourself out of all the worry and paralysis that that doubt causes, do it.

NPR: Could You Be the Great American Novelist?

But in Ohio the trick got out of hand.

CNN: Essay: Ye Olde Town Gimmick

Before you catch up with this, Iran will have another trick to pull out of its hat.

FORBES: Sanctions On Iran: How Washington Can End The Game Of 'Catch Me If You Can'