2 sentences for 士 (shì — specialist)

1. 社会各界人士都积极参与了这项公益活动。

   shè​huì gè​jiè rén shì dōu jī​jí cān​yù le zhè xiàng gōng​yì huó​dòng.

   People from all walks of life actively participated in this public welfare activity.

   Source: Dong Chinese Dictionary

2. 史书中记载，这位君主非常善于引用和提拔贤能之士。

   shǐ​shū zhōng jì​zǎi, zhè wèi jūn​zhǔ fēi​cháng shàn​yú yǐn​yòng hé tí​bá xián​néng zhī shì.

   According to historical records, this monarch was very skilled at recruiting and promoting talented individuals.

   Source: Dong Chinese Dictionary