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as (much) as possible; as (much) as one can; wherever practicable; if possible
成る丈早くこの仕事を終わらせたいです。
I want to finish as soon as possible.
成る丈節約するように日々心がけています。
I try to save as much as possible.
成る丈迷惑をかけないようにする。
I try not to cause trouble as much as possible.