have/keep your finger on the pulse (of something)KNOW somethingto always know about the most recent changes or developments in a particular situation or activity 掌握(某事物的)脉搏,了解(某事物的)最新变化[发展] people who have their finger on the pulse of fashion and pop culture 掌握时尚及流行文化脉搏的人
→ have/keep your finger on the pulse (of something) at finger1(5)