mobility

名词 mobility:

1. the quality of moving freely

1. In modern warfare, mobility and sophisticated weapons are more important than weight of numbers.
   在现代战争中，机动性和先进武器比人多势众更为重要。
2. A private car gives a much greater degree of comfort and mobility.
   私人小汽车能给人很大的舒服和机动性。

mo.bil.i.ty

n.（名词）
The quality or state of being mobile.
易动性：易动的性质或状态
The movement of people, as from one social group, class, or level to another:
流动：人的移动，如从一个社会集团，阶级或阶层移向另一社会集团，阶级或阶层：
例句：
.There`s been . . . restructuring of industry and downward mobility for Americans as a whole.(Lawrence W. Sherman)
.曾有…工业的调整时期，总体而言当时的美国人向下层社会阶层流动.(劳伦斯W.谢尔曼)