under-the-radar
US /ˈʌndər ðə ˈreɪdɑːr/
UK /ˈʌndər ðə ˈreɪdɑːr/
1.
不为人知, 低调, 秘密的
not attracting much attention; unnoticed or secret
:
•
The small, independent film was an under-the-radar hit.
这部小型独立电影是一部不为人知的佳作。
•
They prefer to keep their relationship under-the-radar.
他们更喜欢让他们的关系不为人知。