The filter function works much the same way as for lists, except that in addition to testing each entry's value using v: val, you can also test its key using v: key. For example.

filter函数的工作方法和列表中的相同，除了用v： val来检测各条目的值，您还可以用v： key来检测它的键。

youdao

And, the way we can get it, so, it's called usually V, so, V here stands for velocity more than for vector. And, you just get it by taking the derivative of a position vector with respect to time.

根据它的原理，我们通常用v表示,这里的V更代表速率而不是矢量，你能通过,对一个关于时间的位置向量求导得到它。

youdao

The results of this work show that non-planar, multi-gate device architecture is an effective way to improve the scalability of III-V QWFETs for low power logic applications,’’ according to the firm.

本文显示立体型多栅结构可有效提升低功耗逻辑用III-V族QWFET管子的尺寸缩微能力。

youdao

Also in Kenya, a video game is being tested as another way to teach young people to avoid H.I.V.

VOA: special.2009.03.16

French universities are named very poetically, Paris I,II,III,IV,V,VI, all the way through XIV, which is a real hole, or XIII is probably the worst.

巴黎的大学命名得都很有诗意,巴黎第一大学,第二大学,第三大学,以此类推,一直到第十四大学,这是真实存在的,第十三大学可能是最差的

耶鲁公开课 - 1871年后的法国课程节选

take the derivative of this, get the velocity vector and you notice his magnitude is a constant Whichever way you do it, you can then rewrite this as v square over r.

对这个式子求一次导,就能得到速度矢量,你会发现其模长是常数,不管用什么方法,加速度也可以写成 v^2 / r

耶鲁公开课 - 基础物理课程节选

So: conjecture v facts and figures, decisive action v a practical way forward.

BBC: Badger v budget, conjecture v fact

But the spirit would be V-chip all the way.

FORBES: Huckleberry Finn, Censorship and e-Book V-Chips

It's my hunch that in a two-way debate, Gore v.

CNN: Lance Morrow: Why Ralph and Pat should be in the debates