My head is so small, not so much knowledge.

　　我的腦袋那么小，裝不下那么多知識(shí)。

　　No one can have too much knowledge and practice.

　　知識(shí)和實(shí)踐越多越好。

　　You can't learn so much knowledge at one time.

　　你不能一次學(xué)那么多知識(shí)。