They start producing little, miniature sentences like "Want cookie" Or "Milk spill" and the function morphemes, the little words, "In," "Of," "A," "The," and so on start to gradually appear.

他们开始创造出短小的句子,比如"要饼干"或"奶洒了",而诸如"在内","属于","一个","这个"等短词的功能语素,也开始逐渐出现

耶鲁公开课 - 心理学导论课程节选

It's very clear I've got to start with a function that looks like t^.

显然,我得从一个类似与t^的函数开始

耶鲁公开课 - 基础物理课程节选