jog是什么意思解释一下

例句：

I began by jogging in the park and worked up to running five miles a day.

我开始在公园里慢跑，后来逐渐增加到一天跑五英里。

It takes a lot of self-discipline to go jogging in winter.

在冬天跑步是需要很大的自律力的`。

Someone jogged her elbow, making her spill her coffee.

有人不小心轻轻碰了一下她的胳膊肘儿，把咖啡弄洒了。

They set off at a jog up one street and down another

他们开始沿着一条又一条的街道慢跑。