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Momentary wind speed in stadium at a track and field competition may seem to be a trifle thing, but world record could have in a balance. In tennis it takes an eagle eye to see whether a ball lands inside the tape. How does magnesium powder help gymnastics in competition?
瞬时风速对于体育馆的田径比赛项目似乎没有影响,但对于打破世界纪录可能会有推动作用。在网球比赛中需要“鹰眼”来衡量球是否在界内。而在体操比赛中镁粉起到了怎样的作用呢?
词语解释；
1. momentary a. 短暂的;瞬间的
2. trifle n. 小事
