And He2 plus is observed in helium plasmas at high pressure, He2 but not neutral He2.

因此He2+能在高压的氦气等离子体中,被观察到，而不是中性的。

麻省理工公开课 - 固态化学导论课程节选

If you had chosen Beta we would have all gotten B+'s but I guess not.

如果大家都选β都能得B+,但不太可行

耶鲁公开课 - 博弈论课程节选

There are no A+'s; it sounds a little bit like college, but not quite.

没有所谓的A+,这听起来有点像大学,不过不大一样

耶鲁公开课 - 金融市场课程节选