3 sentences

1. 我们无法自保。

   wǒ​men wú​fǎ zì​bǎo.

   We cannot protect ourselves.

   Source: OpenSubtitles

2. 他学习武术仅仅是为了遇到危险时能够自保。

   tā xué​xí wǔ​shù jǐn​jǐn shì wèi​le yù​dào wēi​xiǎn shí néng​gòu zì​bǎo.

   He studies martial arts solely to be able to protect himself in case of danger.

   Source: Dong Chinese Dictionary

3. 在复杂的职场斗争中，他深谙自保之道。

   zài fù​zá de zhí​chǎng dòu​zhēng zhōng, tā shēn'ān zì​bǎo zhī dào.

   In the complex struggles of the workplace, he is well-versed in the way of self-preservation.

   Source: Dong Chinese Dictionary