They might listen to a jazz band playing in the space. 他们可以听到远处的爵士乐队在演奏。 SF story about a wealthy man who develops systems so State-of-the-art that everyone thinks they're proof of an alien civilization This could not use "It really is" which is after all merely "it can be". As an alternative https://erniew055rfh0.ssnblog.com/profile