NEW YORK, June 15 (Xinhua) -- U.S. President Donald Trump on Saturday hosted a military parade in Washington, D.C. to mark the U.S. Army's 250th anniversary, with all-day events and the participation ...

根据美国国立卫生研究院（National Institutes of Health）的数据，痴呆症影响着超过600万美国人，每年导致超过10万人死亡。此外，研究人员估计，55岁以上的美国人中有42%最终会患上痴呆症，并且随着美国人口老龄化，到2060年，每年新增痴呆症病例数量可能会翻一番。

US President Donald Trump's administration has directed immigration agents to stop making arrests at farms, restaurants and ...