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as much as possible; as far as possible; to the best of one's ability; diligently
力めて笑顔を保ちながら困難を乗り越えた。
I overcame difficulties while striving to maintain a smile.
力めて早起きする習慣をつけようとしている。
I am trying to develop the habit of getting up early.
力めて公平な態度で双方の意見を聞いた。
I listened to both sides with as fair an attitude as possible.