Jack stadium - Football stadium with all-weather track.
设有橄榄球球场与全年田径。
2
Jack sat on the fence for a week last spring before he finally joined the track team instead of the baseball team.
去年春天杰克犹豫了一周，最后才加入田径队而没参加捧球队。
3
The emergency escape device for high rise building consists of jack ladder, guide track, chain wheel, speed varying mechanism, hydraulic speed regulating controller, etc.