So this is a little bit negative and this is a little bit positive, which means I could model this by drawing a dipole. This is a dipole.

这边带一点负电,这边带一点正电，这意味着我能把它表示,成一个偶极。

麻省理工公开课 - 固态化学导论课程节选

If she's got a pair of numbers and you got a pair of numbers, the new numbers are called the primed numbers and you want to write them in terms of yours.

如果她有一组系数 你也有一组系数,新的系数被称作带撇的系数,你想用自己的形式来表示它们

耶鲁公开课 - 基础物理课程节选