拓扑是一门数学，它研究的对象是物体在平滑变形(例如伸长、挤压、弯曲、但不得切断或连接起来)之下仍会保持不变的性质。
Topology is the mathematical study of properties that are unchanged when an object is smoothly deformed, by actions such as stretching, squashing and bending but not by cutting or joining.
另外还有一些其他的美工上的小改进，而变形和动画似乎也更平滑了，不过她和 Nexus One 的 2.1 版本之间的区别可不仅仅是用户体验而已。
There are some other minor aesthetic changes, and transitions and animations seem a bit smoother, but the user experience isn't all that different from using 2.1 on a Nexus One.
外科手术可能通过切除异常的平滑肌组织变形和阻断神经支配来缓解疼痛。
Surgery may relieve the pain associated with endometriosis by removal of ectopic smooth muscle metaplasia and interception of innervation.
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