这里有些我为什么要买这个如此昂贵的跑步手表。

Here is a little background on why I splurged and bought such an expensive running tool.

youdao

如果你想对跑步和步行的间隔计时的话，你可以用一个手表或者其他能够发出哔哔声信号的设备当你需要转换的时候。

If you want to time your running and walking intervals, you can use a watch or other device that beeps to signal when you need to switch.

youdao

如果你想对跑步和步行的间隔计时的话，你可以用一个手表或者其他能够发出哔哔声信号的设备当你需要转换的时候。

If you want to time your running and walking intervals, you can use a watch or other device that beeps to signal when you need to switch.

youdao