P.N.

基本解释

It also is making a big push into alternative energies, investing in biofuels and expanding operations designed to cut greenhouse gases. --P.N.
它也积极进入替代能源领域，在生物燃料上投资，同时扩大削减温室气体排放的预算——P.
Setting up a virtual private network, or V.P.N., which encrypts all communications you transmit wirelessly whether on your home network or at a hot spot, is even more secure.
建立一个虚拟专用网络或VPN对你的所有通信进行加密传输，无论在您的家庭网络还是无线的热点，是更是安全的办法。
They are extensively used in our shipments to continental ports. There are never any complaints from our clients, and our insurance company has also approved such packing for W.P.A. and T.P.N.D.
对于运往(欧洲)大陆港口的货物，我们广泛采用纸箱，而且从未有客户抱怨过，我们的保险公司承保水渍险和偷窃及提货不着险时，也同意使用这种包装。

Gregg Easterbrook writes a weekly piece called "Tuesday Morning Quarterback" for E.S.P.N.com.
And this is called a "Pidgin," P-I-d-g-I-n, a pidgin.
这就是所谓的"混杂语言"
耶鲁公开课 - 心理学导论课程节选
We can go all the way down -- magnesium aluminum, all the way to this noble gas, 3s23p6 argon, which would be n e and then 3 s 2, 3 p 6.
我们可以继续，镁，铝,一直到惰性气体，氩它是Ne然后。
麻省理工公开课 - 化学原理课程节选

Sunday's series finale will be played at 7:10 p.m. due to the annual Rock 'n' Roll Marathon.
NPR: Richard, Guzman Lift Padres To 17-Inning Victory