"To have a long term solution, you need both sides to be ready to compromise,"

VOA: standard.2010.01.02

You need insurance on both parents because both parents are contributing to the success of the children.

之所以父母双方都要购买保险,是因为父母双方都对,孩子的成长起着重要的作用

耶鲁公开课 - 金融市场课程节选

So what we need to do here is use the Rydberg formula, and actually you'll be given the Rydberg formulas in both forms, both or absorption and emission on the exams.

我们需要用到Rydberg公式，事实上，在考试时,我们会给你们Rydberg公式的两种形式。

麻省理工公开课 - 化学原理课程节选