活动追踪器
activity───n.活动；行动；活跃
apiculate activity───细尖活动
mental activity───心理活动，智力活动
antioxidant activity───抗氧化活性；[医]抗氧化剂活性
illicit activity───[法]违法活动
activity now───现在活动
connotation activity───内涵活动
financing activity───融资活动
collagenolytic activity───[医]溶胶原活性
Accelerometers are used in activity trackers and apps that count steps or other exercise. They also are used in global positioning system apps, also called GPS.───加速度计被用于运动跟踪器以及统计步数和其它运动的应用程序。它们还被用于全球定位系统应用（GPS）程序。
wearable device market extends well beyond smartphones and smart watches to include clothing, sports/activity trackers, wearable cameras, and even insertable devices beneath the skin and in teeth.───佩带式设备市场不断延伸，已经远远超越智能手机和智能手表，涵盖了服饰、运动／活动追踪器、可佩带式相机，甚至还包括可以嵌在皮肤下和牙齿中的设备。
the average selling price of activity trackers varies by region?───活动追踪的平均销售价格：依地区有何不同？