... 雪上汽车 雪上汽车 Motorschlitten 雪上汽车道 Snowmobile trails 履带式雪上汽车 Snowmobiles ; skimobile ...
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So when things like that happen during the race, they usually get long periods where people are walking their bikes through the snow until a snowmobile goes through or a different trail-breaker go through and pack down the trails so they can ride.
NPR: Got Snow? Add Bicycle.
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