It is confidence on crack.

是愚蠢的自信。

youdao

The rainwater dripped through a crack on the ceiling.

雨水从天花板的裂缝中滴下。

《新英汉大辞典》

The rain-water dripped through a crack on the ceiling.

雨水从天花板的裂缝中漏下来。

《新英汉大辞典》

The first is to help the Mexican government crack down on the powerful drug cartels that operate along the border.

VOA: standard.2009.03.24

So, it frees you from some of Apple's tethers and this was the code that circulated on the Internet iPhone with which people could crack their iPhones.

这样我们就从苹果的约束下解放出来,这些代码是在网站上流通的,使用它们可能损坏你们的。

哈佛公开课 - 计算机科学课程节选

I can change everything overnight; it does happen. I put that in for a reason because sometimes some of you have not taken a physics course and you don't know how to do well in physics and slowly you catch on and by the time it's Final exam you crack the code; you know how to do well.

我能一夜之间扭转乾坤,确实有过这样的例子,我这样做是因为,有时你们中有人可能以前没上过物理课,不知道怎样学好物理,但慢慢地你赶了上来,到期末考试的时候,你忽然灵光一闪,考起试来得心应手

耶鲁公开课 - 基础物理课程节选

The Washington Post did a feature story on crack cocaine use in the same city this week.

FORBES: In 2012, Brazil Hits The Wall

Many European armies are long on undeployable conscripts and short on crack troops.

ECONOMIST: European defence

At the time of the crime, Tammy Lotts said she left her children for several days with her husband to get high on crack cocaine.

CNN: Teens locked up for life without a second chance