camp sheathing

例句：

1. 1. The camp was built on a high mountain for safety reasons.
   为了安全原因，营地建在了高山上。
2. 2.The tents were well-sheltered from the rain and wind.
   帐篷被很好地遮蔽起来，免受雨水和风的侵袭。
3. 3.The shelter provided by the trees was essential for survival during the harsh winter.
   树木提供的庇护对于在严酷的冬天生存至关重要。