If the two media have really different densities, like air and water, then most of the energy is going to be reflected back, very little of it will keep going and get transmitted into the new medium.

而如果这两种介质的密度相差较大，就像空气和水那样，那么大部分的能量将会折射回来，只有一小部分会继续传播进入到新的介质中。

youdao

But advertisers do not value the two media in the same way.

但是广告客户并不认为这两种媒体有相同的价值。

youdao

Two media types must therefore be added to the framework: "sold" and "hijacked."

因此，两种媒介类型必须被加入营销架构：“售出”（sold）和“劫持”（hijacked）。

youdao

He says he first heard about social media two or three years ago at a business meeting.

VOA: special.2009.09.14

A fierce media war was going on between two major newspaper publishers in New York.

VOA: special.2009.08.28

"In the past two years, candidates are not seeing social media as a place that we have to keep private from prospective employers but as a tool that will assist in my search."

VOA: special.2011.05.13

Twenty-two media workers were killed in 2006 so far, according to the NGO.

UNESCO: OFFICE IN DHAKA

He had received them for giving two media interviews without the theater's permission.

CNN: SHARE THIS

Well, you can actually setup two Media Servers in your house and then scale the system up to 12 TVs.

ENGADGET