Activity Tracker
This is a wearable device that measures how much you walk or run. Fitbit and Nike+ are popular examples.
這是一個穿戴裝置,用來測量你走路或跑步的多少。Fitbit和Nike+就是兩種受歡迎的商品。
![Activity Tracker](image/qc/51.jpg)
This is a wearable device that measures how much you walk or run. Fitbit and Nike+ are popular examples.
這是一個穿戴裝置,用來測量你走路或跑步的多少。Fitbit和Nike+就是兩種受歡迎的商品。