“任用亲信”可以翻译为“appoint or promote close associates/confidants” 或者 “favor one's cronies in appointment/promotion” 。
“appoint or promote close associates/confidants” 直接表达了任用和提拔亲近之人的意思。
“favor one's cronies in appointment/promotion” 侧重于表达在任用或提拔过程中偏袒亲信的行为 。