二月份是美国的黑人历史月，来认识几位在健康、科学和医学方面的非裔美国人先驱。
African Americans Pioneers in Health, Science, and Medicine
February is the Black History Month in the United States. Get to know these African Americans Pioneers in Health, Science, and Medicine.
来认识几位在健康、科学和医学方面的非裔美国人先驱
