1. Few things could be more impressive than the peace that descends on deserted city streets at weekends
    周末，空旷的街市笼罩着一种宁静气氛，没有什么能比此时的宁静更令人难忘了。

2. For the buffalo on the other side, since buffalo no longer wandered about the great grasslands, Fraser was forced to sketch an aging buffalo from New York City's Central Park Zoo.
    由于大草原上不再有野牛漫步，弗雷泽为了镍币另一面上的野牛，只好到纽约中央公园的动物园里素描一只老野牛。

3. For instance, Mexico City has a three-level system for identifying taxis.
    比如，在墨西哥城辨认出租车有一个三级体系。