不甘心

wǒ men shū gěi nà ge duì wǒ zhēn bù gān xīn

我们输给那个队，我真不甘心。

We lost to such a team. I simply can't take it.

wǒ men bù gān xīn shī bài

我们不甘心失败。

We refuse to resign oneself to defeat.

tā shì shì bù gān xīn luò zài rén hòu

她事事不甘心落在人后。

She never want to take a backseat to anyone.