a typhus immunization certificate的用法和样例：
- The foldout of immunization certificate was the white-black picture of poster. After reversion,95.6% targets could understand and 97.8% targets had acceptability and approval to the foldout.
- Conclusion To improve the rate of owing immunization certification, the education about knowledge of EPI (expand plan immunization) should be strengthened.
- There is a vein of melancholy in his character.
- There was a long lag in forwarding mail to us.