Because two aquarium are special heavy, he can change water with straw only, need to have 10 meters long straw to toilet from aquarium position, for this he asks a friend to help designedly.

• 由于两个鱼缸都非凡重，他只能用吸管换水，从鱼缸位置到卫生间需要有10米长的吸管，为此他特意请朋友来帮忙。