spittle insects

例句：

1. 1.These insects are known to be carriers of diseases.
   这些昆虫已知是疾病的携带者。
2. 2.The spit-up from the baby is a common sight in hospitals.
   婴儿的呕吐物在医院很常见。
3. 3. The scientists discovered new species of insects that feed on nectar.
   科学家们发现了新种类的昆虫，它们以花蜜为食。