keep your ear to the ground
US /kiːp jʊər ɪər tə ðə ɡraʊnd/
UK /kiːp jʊər ɪər tə ðə ɡraʊnd/

1.
密切關注動態, 留意情況, 打探消息
to pay attention to what is happening around you in order to be aware of new developments or opportunities
:
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You need to keep your ear to the ground if you want to find a good job in this industry.
如果你想在這個行業找到好工作,你需要密切關注動態。
•
The detective always keeps his ear to the ground for any new leads.
偵探總是密切關注動態,尋找任何新的線索。