"Alien Contact," for example, is an exercise developed for middle-school students who use hand-held devices that can determine their location.

例如，“Alien Contact”是为中学生开发的一种练习，他们可以使用手持设备来确定自己的位置。

youdao

I this year for the first time and alien contact!

我今年第一次和外星人接触！

youdao

Naked Science: Alien Contact, The National Geographic channel.

——《科学新发现：与外星生命接触》，国家地理频道。

youdao

That is unless we do ever contact alien life that is comprehensible.

BBC: How sci-fi moves with the times

He also suggested that the potential threats posed by contact with alien intelligence should discourage us from actively sending out messages to the cosmos.

CNN: Should we fear space aliens?

If we ever make contact with an alien civilization and we want to explain to them who we are, the best thing we can do is get them a Facebook account.

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