兢兢乾乾

jīng jīng qián qián

战战兢兢

zhàn zhàn jīng jīng

兢兢翼翼

jīng jīng yì yì

精明强干

jīng míng qiáng gàn

非意相干

fēi yì xiāng gān

干净利落

gān jìng lì luò