不由

bù yóu nǐ shuō

不由你说。

It's not up to you to say.

bù yóu nǐ bù xiāng xìn

不由你不相信。

You have no choice but to believe.

wǒ de fǎn yìng bù yóu zì zhǔ

我的反应不由自主。

My reaction was automatic.

tā bù yóu de shuì zháo le

他不由得睡着了。

He fell asleep, in spite of himself.

wǒ bù yóu de tōu kàn le yī xià chōu ti

我不由得偷看了一下抽屉。

I couldn't resist peeking in the drawer.