加劲jiājìnMeanings1. to increase efforts2. to make extra effortsCharacters used加to increase劲energyExamples1汤姆Tāngmǔ如果rúguǒ想xiǎng通过tōngguò这zhè门mén课kè，就jiù需要xūyào加劲jiājìn学习xuéxí。Tom needs to study more if he hopes to pass this class.