These glasses allow you to see the film in three-D.

这副眼镜让你能看立体电影。

《牛津词典》

Three other types of airspace, Classes D, C and B, govern the vicinity of airports.

其他三种领空，D、C 和 B 类，管理着机场周围地区。

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So attention is shifting to the next frontier in display technology: three-dimensional (3-d) images.

现在，人们的注意力转移到了下一代的前沿科技产物：三维影像(three - dimensional images)。

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An A is worth four points, a B three points, a C two points and a D one point.

VOA: special.2009.03.05

And here d, of course, can take the values from plus three down to minus three.

而d层，当然，能够包括从+3到-3的所有值。

麻省理工公开课 - 固态化学导论课程节选

So, if you'd like to switch into one of these three, they have very low numbers right now.

如果你们想要更改去上这三个课程，还有些名额。

麻省理工公开课 - 固态化学导论课程节选

The three D-ILA devices in each HDTV are combined with a new mirror and lens that has allowed JVC to reduce the projection distance needed and slim down the sets considerably.

ENGADGET: JVC's new 1080p projectors, front & rear HD

Bill Clinton's "three D's" accepted erf!

CENTERFORSECURITYPOLICY: Safire makes the case for a missile defense for allies and US

He calls local media "abusive" and keeps harping on a "three-D" conspiracy of disinformation, disaffection and destabilization against him.

CNN: Reinventing Estrada