Don't confine your learning only to schoolwork.
不要把自己的学习只局限于课堂。
动词词组confine...to...,把……局限在……之内。
例句:
He is asked to confine his use of the telephone to business calls alone.
他被告知,只能用这部电话处理公务。
They managed to confine the disease to a small area.
他们设法将疾病控制在小范围之内。