The competition to produce lighter and lighter racing snowshoes ended when a rule was passed that said that racing snowshoes could not weight less than 680 grams.

生产越来越轻便的竞赛用鞋的竞争，由于一项法规才得以停止，那项法规规定竞赛雪鞋的重量不得低于680克。

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Formula Sports A set of specifications, including engine displacement, fuel capacity, and weight, that determine a class of racing car.

训练课程：一套规程，包括发排机排量、燃料容量和重量，决定着赛车的级别。

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For example, those few extra pounds will provide fuel for Lagat to burn once he resumes training. (Lagat's racing weight is 130 pounds.) But five-week vacations aren't particularly common, Thompson said, at least not among American athletes.

WSJ: The Secret to Running: Not Running

The real thrill of these little cars is the power--remember, they have the same weight but five times the horsepower of the slowpoke Skip Barber school's racing cars.

FORBES: Real men eat dirt

The real thrill of these little cars is the power--remember, they have the same weight but five times the horsepower of the Skip Barber school's slowpoke racing cars.

FORBES: Real men eat dirt