梅毒

例句：

1. 1.Syphilis is a sexually transmitted disease that can cause serious health problems.
   梅毒是一种可以通过性传播的疾病，可能导致严重的健康问题。
2. 2. The patient was diagnosed with syphilis and required treatment.
   病人被诊断出患有梅毒，需要接受治疗。
3. 3.Syphilis can be prevented by practicing safe sex and getting regular medical check-ups.
   通过实行安全性行为和定期进行医疗检查，可以预防梅毒。