每辆车都有个驾驶员，不是每辆车都有乘客。

来源: 于 2017-10-17 07:54:30 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

These calculations take into account only deaths of drivers, not passengers, since every vehicle that crashes has a driver, but not every vehicle has passengers.