如何使用 "footstep" 造句
- 1. I heard his footstep on the stairs .
- 我听到他踩在阶梯上的脚步声。
- 2. And home guardian , developed at the university of virginia and set to be released next year , works in a similar way , analysing footstep patterns to detect problems .
- 弗吉尼亚大学开发的homeguardian定于明年发布，其工作方式也类似，它会分析脚步模式来发现问题。