Where were ye Nymphs, when the remorseless deep / clos'd o'er " the head of your lov'd Lycidas?"
诗歌大意:,“女神们,你们在哪里,当无情的海水漫过你们挚爱的利西达斯的头顶“
We ask. And then the soul theorist says, "Well, uhm.. er.. ah.. it just can."
要是我们这么问,灵魂学说者就会说,那个,嗯,呃,啊,它就是能产生
You know,like TV shows,"Last time on ER."
就像电视剧一开头的前情提要“
You see a bleep going across the screen to indicate that they've got their finger on the pulse of what's happening, or you see it in TV shows like ER.
你们看到一个亮点在屏幕上来回跳动,来显示病人脉搏的,跳动情况,就像在急诊室的故事,这类电视中看到的那样
Here's the problem. How do I get to the nth- er, the k'th element in the list, in this case?
如何找到第n个元素呢-,在这里,如何找到第k个元素呢?
He constantly warns his son, who was kind of an n'er do well, that, "You better work hard, " Or, "You better work a little harder and pay more attention to what you're doing.
他不断提醒那一事无成的儿子,"你要加倍用功,哪怕只是稍微用点心,对你做的事要更上心
Er, right now it's hard to say.
额,现在还很难说。
At each point, er is a different vector pointing in the radial direction of length one.
矢量 er 在每一点处都不同,方向都从圆心指向该点,模长为1
er is a vector at each point of length one pointing radially away from the center.
r 是一个模长恒为 1 的矢量,方向沿半径向外
So sometimes what we do is introduce a little vector here called er.
通常我们的做法就是引入一个矢量 er
So er is a new entity I've introduced for convenience.
因此,er 是为了方便而引入的
er is not a fixed vector.
r 不是一个固定矢量
The direction is -er.
方向是 -er
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