送交者: true 于 2014-06-01, 20:55:43:

回答: A country may make law such that some satellites 由 steven 于 2014-06-01, 20:48:13:

• Long time ago, when I worked on a satellites phone program - steven (439 bytes) 2014-06-01, 21:02:13 (750485)

加跟贴