拓扑学研究的是物体在拉伸或扭曲后仍保持不变的几何特性。

___Topology studies geometric properties that remain unchanged under stretching or bending.

星型拓扑结构使我们的办公室网络更加可靠。

The star ___topology makes our office network more reliable.

计算机网络的拓扑结构决定了数据传输的效率。

The ___topology of a computer network affects its data transfer efficiency.