北京冬奥速递｜冰壶先开战，中国两连胜：选手们到底在“擦”啥

There's a technique in curling called "pebbling," meaning ice makers spraying water evenly across the curling lanes that turn into countless little "pebbles" as they freeze. 

冰壶中有一种技术叫做“打鹅卵石”，意思是制冰机在冰壶道上均匀地喷洒水，水结冰后就会变成无数的小“鹅卵石”。

The goal the players are trying to achieve by brushing along the track of the stone is to change its direction or speed. 

刷冰员通过刷石球的轨迹来达到的目标是改变它的方向或速度。

Purified water freezes faster and harder, which makes the brushing much better and allows the pebbles to stay standing tall for the whole game.

去离子水结冰更快、更硬，这使得刷冰效果更好，让鹅卵石可以持续正常比赛。