Only a picket post half a mile out, on the railroad, and a single sentinel at this end of the bridge.
只在半英里以外有一个警戒哨，位于铁道线上，桥的这一端有一名哨兵把守。
2
Track your splits per mile for post-run analysis.
为训练之后的分析，记录每英里的配速。
3
Six: location display products is divided into six zones, four post LED light display, stick out a mile, suspicious objects in each region accurately display.