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HBV serums were all negative.
乙型肝炎血清全部阴性。
youdao
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The difficulty is getting the snake bit victims to the serums in time.
困难的是要让被毒蛇咬到人能及时注射抗毒血清。
youdao
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The difficulty is getting the snake bit victims to the serums in time.
困难的是要让被毒蛇咬到人能及时注射抗毒血清。
youdao