Gnathostomidae

例句：

1. 1. The gnathostomes are a group of insects that feed on blood.
   蚊蝇科是一类以血液为食的昆虫。
2. 2.Gnathostomes are found throughout the world and can be found in many different habitats.
   蚊蝇科遍布全球，可以在许多不同的栖息地中找到。
3. 3.The gnathostomes have been studied for their ability to transmit diseases.
   蚊蝇科因其传播疾病的能力而受到研究。