If some care and support sprocket wheels running status can not continue to use, it may cause partial grinding wheel, but also probably caused by the weartrack chain.
若在部分托链轮和支重轮无法运转的状态下继续使用，则可能导致滚轮磨偏，同时还可能造成轨链节的磨损。
2
A number of sites track what celebrities wear so that viewers can copy the styles.
很多网站都追踪明星的穿着以方便观众跟从模仿她们的风格。
3
GE has come up with "body sensor networks", tiny wireless devices that track the vital signs of those who wear them.