hill-climbing

例句：

1. 1.The climbers were exhausted after their long ascent.
   登山者在长途攀登后筋疲力尽。
2. 2.She decided to go hiking in the mountains this weekend.
   她决定这个周末去山里徒步旅行。
3. 3. The hike was challenging but rewarding for those who completed it.
   这次徒步旅行很有挑战性，但对于那些完成它的人来说是值得的。