并且以你工作所允许的最低频率检查邮件，希望是每天一或两次。

And check it as infrequently as your job permits, hopefully once or twice a day.

youdao

在调查中，研究员还发现，女性的购物频率至少每两周一次，而且有14%的受调查的女性承认，她们渴望天天购物。 与此相对，大多数的男人还是把购物当做一种“任务”，希望购物的时间越快越好，更有效率些。

Ideally, women would go shopping at least twice a week, but 14 per cent could happily shop daily - this is compared to the majority of men being content with a quick shop once a week.

youdao

我希望这个讨论澄清了这个谜团，关于固有频率没有进一步变化之前，为什么它们只能移动这么多的谜团。

I hope that this discussion clears up the mystery as to why the frequencies can only shift so far before there is no further change in the frequencies.

youdao

What Einstein then clarified for us was that we could also be talking about energies, and he described the relationship between frequency and energy that they're proportional, if you want to know the energy, you just multiply the frequency by Planck's constant.

爱因斯坦阐述的是我们,也可以从能量的角度来谈论，他描述频率和能量之间的关系,是成比例的，如果希望知道能量值，你用普朗克常数乘以频率就可以了。

麻省理工公开课 - 化学原理课程节选