例句與造句

1. Antibodies were part of the r-globulin fraction of serum .
   抗體是血清r-球蛋白的一部分。
2. Antibodies were part of the r - globulin fraction of serum
   抗體是血清r -球蛋白的一部分。
3. It's difficult to find r-globulin in a sentence. 用r-globulin造句挺難的