balancing arbor

例句：

1. 1. The architect designed a balanced arbor to support the weight of the building.
   建筑师设计了一个平衡的树枝来支撑建筑物的重量。
2. 2.The balance of nature is maintained by the balanced arbor system.
   自然界的平衡由平衡的树枝系统维持。
3. 3. The scientist observed the balanced arbor in the forest and noted its importance in maintaining biodiversity.
   科学家观察了森林中的平衡树枝，并注意到它在维护生物多样性中的重要性。