So for each student the tutor builds a model of that Student's current state what the computer thinks they Know and doesn't know, and tries to present the student options that best meet what the tutor thinks are the student's need at that moment.

因此辅导系统会给每个学生,创建一个模型记录他们当前的学习状态,判断他们已经掌握和还不了解的知识,然后给出此时导师认为,最符合他们需要的选择。

麻省理工公开课 - 媒体、教育、市场课程节选

If you don't move 10 yards in that... if you don't move the 10 yards in your four tries,

如果你不推进十码……如果在那四次机会中你不推进十码，

美式足球 - SpeakingMax英语口语达人

What a particle tries to do generally is some crazy thing which doesn't have a name, but it's a function x of t.

一个质点的运动一般非常混乱,因此对应的函数没有名字,但它还是函数x

耶鲁公开课 - 基础物理课程节选

Second formula tries to relate the final velocity of some time, t, to the initial velocity and the distance traveled with no reference to time.

第二个式子能把某段时间t的末速度,和初速度,经过的路程联系在一起,并且不引入时间

耶鲁公开课 - 基础物理课程节选