work hard at meaning in Chinese
努力工作（或学习）
努力工作（学习）
努力学习
努力做
在……努力工作
Examples
- He worked hard at his studies in early childhood
他从小就认真读书，刻苦学习。 - My english is very poor , so i must work hard at it
我的英语很差,所以我得努力学习它 - He worked hard at first , but he has eased up lately
他最初努力工作,但他近来已放松。 - In order to master english we must work hard at it
为了掌握英语，我们必须努力学习它。 - We have to work harder at cheering up the patients
我们更要努力些，使病人们振作起来。