Freshman year at the U. s. Naval Academy in Annapolis, Md., ends with a Sea Trials challenge that tests teamwork and Leadership skills.
位于马里兰州安纳波利斯的美国海军军官学院，以考验团队精神和领导能力的演习来结束大一生活。
2
This is the postcode category of MD - Maryland, U. s.
这是美国马里兰州的邮政编码分类。
3
A team of researchers from the U. s. and Europe, including the drug's creator, Brian Druker, MD, followed 454 patients with chronic-phase CML taking imatinib for more than six years.