1. Chemosensory perception is crucial for animals to detect and respond to chemical stimuli in their environment.

化学感觉对于动物来说是关键的，它使得它们能够检测并对环境中的化学刺激做出反应。

2. The chemosensory system allows certain animals to locate food sources based on chemical cues.

化学感觉系统使得某些动物能够根据化学信号来定位食物源。