n. the state of being in operation
n. the act of administering or being in charge of something
a. (of fluids) moving or issuing in a stream
s. continually repeated over a period of time
n. 赛跑, 流出, 运转
a. 流动的, 跑着的, 连续的
1. I enjoy running in the park every morning.
我喜欢每天早上在公园里跑步。
2. She is training for a marathon by running five miles a day.
她每天跑五英里在为马拉松训练。
3. Running helps me clear my mind and feel relaxed.
跑步帮助我清理思绪，让我感到放松。