On thin ice? 在薄冰上？

The temperature was twenty degrees below freezing, but that didn't stop these sports enthusiasts.

Racing teams in Poland took advantage of the wintry weather to sail their iceboats on a frozen reservoir.

The one-man vessel is light and agile, and can reach speeds of over 100km per hour.

Many competitors train in sailing boats in summer months and switch to iceboat racing during the winter.

词汇:

enthusiasts 运动爱好者

took advantage of 利用

reservoir 水库

vessel 船只

competitors 参赛选手