for all something or someone is worth
: to the fullest extent possible : as much as possible or with as much effort as possible竭力；拼命 -
They milked/exploited their advantage for all it was worth. [=they used their advantage to help themselves as much as they could]他们已经把优势发挥到了极致。
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He was fighting for all he was worth. [=fighting as hard as he could]他在尽力拼搏。
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I ran for all I was worth. [=as fast as I could]我拼命跑了起来。