| 单词 | challenging route |
| 释义 | challenging route The hilly and challenging route combined with beautiful green scenery make the race unforgettable. Retrieved from Wikipedia CC BY-SA 3.0 The sport of bouldering - climbing without ropes or harnesses, typically on short, challenging routes - originated as a method of training for expert climbers and mountaineers. Times, Sunday Times Other more challenging routes to the summit exist, such as on the west face. Retrieved from Wikipedia CC BY-SA 3.0 |
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