Doing math is a piece of cake什么意思?

Doing math is a piece of cake什么意思? Lt is a piece of cake的中文意思 a piece of cake啥意思 A piece of cake.美国俚语意思 A piece of cake意思是? Speaking English is a piece of cake. a piece of cake 英语谚语意思:1Like father,Like son.2It is a piece of cake Just a piece of cake! a piece of cake有没有一块蛋糕的意思? it's a piece of cake是啥意思? It's a piece of cake.的中文意思?