Alien communicates with strange signals.
Meaning: An alien is trying to talk to us using signals that we don't understand.
Choice of Words: Alien refers to an extraterrestrial being or life form. Communicates means to convey information or ideas. With indicates the means or instrument used. Strange signals are unfamiliar or unusual. The phrase "communicates with strange signals" suggests that an alien entity is using unfamiliar methods to convey information.
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