当他单膝跪地求婚时，她感觉自己的心都要幸福得炸开了。

When he knelt down to propose, she felt her ___exploding heart could barely hold all the joy.

听到那个消息后，她感到心如刀绞，整个人都无法动弹。

After hearing the news, she stood frozen with an ___exploding heart, unable to move.