stack top

例句：

1. 1.The engineer carefully stacked the boxes to avoid damaging the fragile items inside.
   工程师小心翼翼地堆放箱子，以免损坏里面的脆弱物品。
2. 2. The mountain's stack top is visible from a distance.
   从远处就能看到这座山的堆顶。
3. 3. The climbers carefully stacked their gear on the summit of the mountain.
   登山者小心地将他们的装备堆叠在山顶上。