bubble under
高级 (C1) neutral
To be almost there — nearly at the top or ready to come out, but not quite yet.
"The band's new single has been bubbling under the Top 40 for three weeks now."
在语境中听
Full Marco Rubio press conference: Trump official talks Pope Leo meeting in White House briefing
USA TODAY · 2:13
to provide a protective bubble under which they can operate and move
Live: Rubio holds White House press briefing before Pope Leo meeting amid Iran war Hormuz blockade
USA TODAY · 22:22
to provide a protective bubble under which they can operate and move