他的学问非常深厚。
tāde xuéwèn fēicháng shēnhòu 。
His knowledge is very profound.
她对这门学问非常感兴趣。
tā duì zhè mén xuéwèn fēicháng gǎnxīngqù 。
She is very interested in this field of knowledge.
学问需要不断地积累。
xuéwèn xūyào bùduàndì jīlěi 。
Knowledge needs to be accumulated continuously.