Zhè zhǒng yìmiáo shì yóu jǐ wèi yīxuéjiā huā le shí nián shíjiān yánzhì chūlai de.
This vaccine was developed by a few medical scientists over ten years.
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医学家 is a medical scientist, or a physician known for advancing medicine, such as 华佗 or 李时珍. The doctor you see at a clinic is a 医生, or in northern speech a 大夫.
