mesosyphilis

例句：

1. 1. Syphilis is a serious disease that can cause blindness.
   梅毒是一种严重的疾病，可能导致失明。
2. 2. The doctor diagnosed him with syphilis and prescribed antibiotics.
   医生诊断他患有梅毒，并开了抗生素。
3. 3. Syphilis can be transmitted through sexual contact, so it's important to practice safe sex.
   梅毒可以通过性接触传播，因此重要的是要实践安全的性行为。