如果不行，那就休息一段时间，擦擦汗水，再重复一次20秒。

If not, do another 20 seconds after you've taken a break and wiped the hard-earned sweat off your brow.

youdao

如果不行，那就休息一段时间，擦擦汗水，再重复一次20秒。

If not, do another 20 seconds after you've taken a break and wiped the hard-earned sweat off your brow.

youdao