A pheromone is a chemical that elicits a specific behavioural response at a distance. 信息素是可以在远距离诱导出特定行为反应的物质。
Autism is a complex brain disorder that inhibits a person?s ability to communicate and develop social relationships, and is often accompanied by extreme behavioral challenges. 孤独症是一种复杂的大脑功能障碍，与人交往能力和社交能力受限，常伴有极端行为反应。
