词典释义：
双语例句
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In the circle of mountaineering, there is such a saying: What makes the skier give up in deed is not the distant cloud-kissing peak, but often is the grain of sandstone in his shoe.
登山界有这样的说法：真正导致滑雪者放弃的不是远方高耸入云的山峰，而往往是鞋里的一粒砂石。