意思：

n. 运转；赛跑；流出

adj. 连续的；流动的；跑着的；运转着的

v. 跑；运转（run的ing形式）；行驶

The machine is in running order.

这台机器运转正常。

It has snowed for three days running.

已接连下了三天雪。

He practises running every morning.

他每天早上练习赛跑。

I had no running left in me at the finish.

我到终点时一点气力也没有了。