1、The bright coloration of some insects serves as an aposematic signal to potential predators, warning them of their toxicity.
某些昆虫的鲜艳色彩作为一种明确的警示信号，向潜在的捕食者发出毒性的警告。

2、The aposematic markings on the frog's skin serve as a visual deterrent to predators, indicating that it is poisonous.
青蛙皮肤上的明显标记作为视觉威慑物，向捕食者显示其具有毒性。