英语语法分析

Be how big lockjaw occurrence probability?

破伤风发生的几率有多大？

Bacteria that live in the soil may produce tetanus (lockjaw).

生存于土壤中的细菌可引起破伤风。

Serums contain antibodies that fight off the germs of certain diseases including scarlet fever and lockjaw.

血清含有战胜某些病病菌的抗体，这类疾病包括猩红热和破伤风。