尽心尽力

Pinyin: jìn xīn jìn lì Usage: 联合式；作谓语；含褒义 Explanation: 指费尽心力 Source: 《晋书·王坦之传》：“且受遇先帝，绸缪缱绻，并志竭忠贞，尽心尽力，归诚陛下，以报先帝。” Thesaurus:  do/try one's best/utmost, one cannot keep one's mind on two things at the same time, as ,best one `can not perfectly but as well as one is able to