4 sentences

1. 他深谙为人处世之术。

   tā shēn'ān wéi rén chǔ​shì zhī shù.

   He is well-versed in the art of social conduct.

   Source: Dong Chinese Dictionary

2. 他在官场混迹多年，深谙处世之道。

   tā zài guān​chǎng hùn​jì duō nián, shēn'ān chǔ​shì zhī dào.

   He has been in officialdom for many years and knows the ways of the world very well.

   Source: Dong Chinese Dictionary

3. 他历经社会磨炼，已经深谙人情世故。

   tā lì​jīng shè​huì mó​liàn, yǐ​jīng shēn'ān rén​qíng shì​gù.

   Having gone through the trials of society, he is well-versed in the ways of the world.

   Source: Dong Chinese Dictionary

4. 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