什么是Amount

amount英[Y萴a妌t]美[Y萴a妌t]

n.量，数量; 总额; 本利之和; 全部效果，全部含义;

[例句]It's the capacity of those roads which is going to constrain the amount of travel by car that can take place.

制约驾车出行量的将会是那些道路的通行能力。