We notice that the value of E at r naught is negative, as it should be. It's a negative number.

我们主要到在r圈时E的值为负，和它本来的值一致，是一个负数。

麻省理工公开课 - 固态化学导论课程节选

I would love to be in a big, big network and have my own show with a big network.

我很想进入一个很大很大的领域，在圈内有自己的演出。

阳光总在风雨后 - SpeakingMax英语口语达人

And at a distance of 2 r naught, I have a positive repulsive term.

在这2r圈的距离上，这里有一个不可忽略的排斥场。

麻省理工公开课 - 固态化学导论课程节选

open your textbook and put a circle around question number one.

打开你的课本，在第一个问题上画一个圈。

Would you please 实战 - SpeakingMax英语口语达人