Fungi which don't often cause infections in people with healthy immune systems but can under some circumstances, and can be tremendous problems in patients that have weakened immune systems.

真菌在免疫系统健康的情况下通常,不引起感染,但在某些情况下也会感染,那就成了极大的问题,在免疫系统脆弱的病人体内

耶鲁公开课 - 生物医学工程探索课程节选

These systems have some built-in knowledge, and they have to do some learning, but the learning pattern varies from system to system and there's a separateness to them.

这些系统拥有部分先天知识,它们能够进行一定的学习,但学习模式因系统的不同而有所变化,它们之间也是相互独立的

耶鲁公开课 - 心理学导论课程节选