1. The aging king-abdicated his throne and went into retirement.
    那老国王逊位退休。

2. Tai chi is just one form of exercise studied for its fall-preventing benefits as part of a recently completed six-year project by the National Institute on Aging and the National Institute of Nursing Research.
    全国老龄协会和全国护理研究协会最近完成了一个为期六年的研究项目，其中一部分是研究太极等锻炼方式在防止摔跤方面的益处。

3. 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。

更多句子>>>