go under
phrasal verbgo under
(of something that floats 漂浮的东西 to sink below the surface 沉下去；沉没 - (informal)
to become bankrupt (= be unable to pay what you owe) 破产
go under something
(also go by something)
to be known or called by a particular name 叫作；称作 He goes under the name of King Creole. 他以克里奥尔国王的名字命名。