这“鬼怪”会在出人意料的时候找到他，这时这位哲学家数小时站立不动，目视前方。

This "demon" would come to him during strange episodes when the philosopher stood still, staring for hours.

youdao

在c点，我们可以看到每用户事务数的进一步稍微下降，这时注册用户(和15分钟活动用户)倍增。

At point c, we can see a further smaller drop per active user when the number of registered (and active-15 minute users) doubled.

youdao

但是这时候会影响到癌症的危险性还是一个未知数。

But whether this affects cancer risk is unknown.

youdao

No, we can't. Because if l equals 1, we can not have m sub l equal negative 2, right, because the magnetic quantum number only goes from negative l to positive l here.

不行，因为如果ｌ等于１,ｍｌ的值不可能等于－２，对吧，因为磁量子数的值,这时只能从－１到１

麻省理工公开课 - 化学原理课程节选