These sugars are very probably unique in that they are both a nutrient and a psychoactive substance with some addictive characteristics.

这些糖很可能是独一无二的，因为它们既是一种营养物质，又是一种精神活性物质，具有一些上瘾的特征。

Psychoactive substances are commonly grouped according to whether they are stimulants, depressants, or hallucinogens.

精神活性物质通常根据兴奋剂、镇静剂或致幻剂进行分类。

Like, he's just taken way too many psychoactive substances to be calm and fine and normal and rational.

就像，他只是服用了太多的精神活性物质，无法保持冷静、良好、正常和理性。

Drugs (substances) that affect the central nervous system and alter perception, mood, and behavior are known as psychoactive substances.

影响中枢神经系统并改变知觉、情绪和行为的药物（物质）被称为精神活性物质。

This color change usually indicates prolonged exposure to Spice — an addictive psychoactive substance found only on the planet Arrakis, considered the most valuable substance in the universe.

这种颜色的变化通常预示着她长时间接触了“香料”——一种只有在阿瑞克斯星球上才能找到的令人上瘾的精神活性物质，被认为是宇宙中最珍贵的物质。