The power from the engine pushes the car forward from the back wheels instead of pulling it forward with the front wheels.

VOA: special.2009.04.10

And so if we wanted to do this here, it's again, the same thing we're just now pulling back this layer and calling them char *s not actually strings.

如果我们想要在这里这样做，再次，我们撤销这一层,把它们叫做char，*s，实际上不是字符串。

哈佛公开课 - 计算机科学课程节选