ball-race

基本解释

The axles run in two-row self aligning ball bearings on the gear side, and a standard sealed ball race on the other end in the sprung axle box, both 12mm bore.
两轴运行的排调心方对球轴承齿轮，和一个标准就在轴箱弹簧的另一端密封球的比赛，两个12毫米口径。
bearing cup with ball bearings in ball race
滚道中带滚珠的轴承环
That horse is a cinch to win the next race.
那匹马在下一场比赛中肯定赢。
He is on a lone fun run, nothing to do with the race.
他自己跑著玩的，和竞赛无关。
Henry is nowhere when it comes to the race for class president.
亨利在竞选级长中被远远抛在后面。