中铜角

例句：

1. 1. The angle of the roof is crucial for stability.
   屋顶的角度对于稳定性至关重要。
2. 2. The center of gravity is where all forces balance.
   重心是所有力平衡的地方。
3. 3. The middle of the road is where we should take our time and make decisions.
   道路的中间是我们应该慢慢走并做出决定的地方。