体表寄生虫的

例句：

1. 1. Parasites can be harmful to the host organism if they are not controlled properly.
   如果寄生虫没有得到适当的控制，它们可能会对宿主生物体造成伤害。
2. 2.The parasite is causing the host to suffer from severe pain and discomfort.
   寄生虫正在使宿主遭受严重的疼痛和不适。
3. 3. The parasite was discovered in a patient's bloodstream, indicating that it had been living inside him for some time.
   在患者的血液中发现了寄生虫，这表明它已经在他的体内生活了一段时间了。