把这一句，留给此刻的你
In the absence of a magnetic field the period of all these oscillations is the same. But as soon as the electron is exposed to the effect of a magnetic field, its motion changes.
在没有磁场的情况下，所有这些振荡的周期都是相同的。但是一旦电子受到磁场的影响，它的运动就会改变。
A LITTLE ENCOURAGEMENT
给此刻的你，一点向前的力量。
关于学习、善意与成长，读一句，再想一想。
When two people first meet, they can only have a very ordinary kind of friendship. But when you begin to understand each other, when you get close to them, you discover that you're suddenly eager to know him or her even better.
当两个人第一次见面时，他们只能拥有一种很普通的友谊。但当你开始了解对方，当你接近他们时，你会发现你突然渴望更好地了解他或她。
Don't make excuses for why you're not doing what you have already deemed critical to your success.
不要为你没有做那些对你的成功至关重要的事情找借口。
Think for yourselves and let others enjoy the privilege to do so too.
自己思考，让别人也享受这样做的特权。