studious
adj. 用功的；热心的；专心的；故意的；适于学习的
例句
I was a very quiet, studious little girl.
我那时是一个非常安静、用功的小女孩。
《柯林斯英汉双解大词典》
Perhaps they're working hard—they don't appear to be very studious here, but they are very friendly.
也许他们工作很努力——他们在这里似乎看上去不太用功，但他们很友好。
She is quiet and studious, in marked contrast to her sister.
她沉静勤奋，与她妹妹形成了鲜明的对照。
《牛津词典》
