吃力 | chī lì | to entail strenuous effort / to toil at a task / strenuous / laborious / strain | |
费劲 | fèi jìn | to require effort / strenuous | |
浩繁 | hào fán | vast / voluminous / many and varied / numerous / extensive amount of / exhaustive / heavy (expenditure) / arduous / strenuous / exhausting / draining / burdensome | |
夜以继日 | yè yǐ jì rì | night and day (idiom) / continuous strenuous effort | |
吃力不讨好 | chī lì bù tǎo hǎo | arduous and thankless task (idiom) / strenuous and unrewarding | |
寒窗 | hán chuāng | a life of strenuous studies (idiom) | |
费力不讨好 | fèi lì bù tǎo hǎo | arduous and thankless task (idiom) / strenuous and unrewarding |