You even cross your heart and hope to die if you are lying.

你甚至发誓说如果说谎你就去死。

For a first time offense, if you swear, cross your heart, that you will never, never steal again.

念你们是初犯，如果你们发誓，从心底里，你们永远永远都不会再偷东西。

" Cross your heart? Men are so untrustworthy" .

“发誓？男人就是这么不靠谱” 。

" To cross your heart and hope to die" is a promise;it's an informal phrase, again often used by children to show that they are being honest, that they really mean what they are saying.

” “发誓要死” 是一个承诺； 这是一个非正式的短语，孩子们也经常用它来表示他们是诚实的， 他们的意思是他们所说的。