I cross my heart and hope to die.

我对天发誓，否则不得好死。

But I have heard it said this way: Cross my heart and hope to die and stick a needle in my eye.

" 若有假话，死翘翘，针扎眼睛。"

I cross my heart and hope to die.

朱莉娅：我的内心深处希望死去。

Cross my heart and hope to die.

我发誓 如果我欺骗了你们 不得好死。

" I cross my heart and hope to die, " you're saying you must believe me, I am telling you the truth.

“我心如死灰， ” 你说你必须相信我，我说的是实话。