他tā坚jiān持chí自zì己jǐ的de看kàn法fǎ。

He insists on his own view.

请qǐng坚jiān持chí下xià去qù，不bú要yào放fàng弃qì。

Please persist and do not give up.

我wǒ每měi天tiān坚jiān持chí学xué习xí。

I persist with studying every day.

她tā坚jiān持chí每měi天tiān跑pǎo步bù。

She insists on running every day.

我wǒ们men必bì须xū坚jiān持chí原yuán则zé。

We must stick to our principles.