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to bust one's ass
01
极度地尝试去实现某事
to try really hard to accomplish something
例子
We're for companies on the move, organizations eager to evolve and businesses busting their asses to advance.
For 10 years, he busted his hump trying to make a name for himself until getting a record deal and releasing his first disc in 1995.
I make it look easy but I busted my butt many times!