我回头一看，赶紧喊了一声：“不好！”

I turn head as soon as looked that, hurried to shout: is not good!

youdao

回头一看，我的脚已经超越了起点线，我跨回来了！

I look back, my foot has gone beyond the starting point line, I cross back!

youdao

回头一看，我的脚已经超越了起点线，我跨回来了！

I look back, my foot has gone beyond the starting point line, I cross back!

youdao