名词
中文翻译：滚轮式雪橇
同义词：
['roller sled', 'roller skate例句：1. The children were playing with their roller sleds in the park.（孩子们在公园里用他们的滚轮雪橇玩耍。）']
例句：
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1. The children were playing with their roller sleds in the park.
孩子们在公园里用他们的滚轮雪橇玩耍。
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2. Roller sleds are a popular winter activity for families.
滚轮雪橇是家庭冬季流行的活动。
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3. The snow was so deep that it was difficult to roll the roller sled down the hill.
雪太深了，很难把滚轮雪橇从山坡上滑下来。