step counter

例句：

1. 1. The fitness tracker is a greattool for tracking your daily steps.
   这款健身追踪器是跟踪你每日步数的好工具。
2. 2. She used the step counter tomonitor her progress in losing weight.
   她使用步数计数器来监控自己在减肥过程中的进步。
3. 3. The doctor recommended that she usea step counter to help her maintain ahealthy lifestyle.
   医生建议她使用一个步数计数器来帮助她保持健康的生活方式。