它的光束，即使离光源极远，也不显著扩散。

The beam does not spread out appreciably, even at large distance from the source.

youdao

火箭和人造卫星能够到达电离层以上极远的地方。

Rockets and artificial satellites can go far above the ionosphere.

youdao

这个成语用来形容极远的地方，或者两个人彼此相隔遥远。

This idiom refers to the remotest places or a very long distance between two people.

youdao

Now, you used to have-- there was a very famous cover of The New Yorker in which you had a map of the United States as seen from New York, and where you had New York, and then you had this sort of large ditch that finally--then, Los Angeles was half a football throw away, and everything in the middle was just sort of desert, basically.

现在,你们曾见过,这是纽约客杂志一张十分有名的封面,这张地图表现的是从纽约的角度看全美国,纽约在这里,这是一条极长的鸿沟,最终,洛杉矶有半个橄榄球场那么远了,图片中心的所有东西基本就是沙漠

耶鲁公开课 - 1871年后的法国课程节选