在欧洲，17世纪贵族私人游艇已成风尚。美国游艇产业在19世纪中后期已逐步兴起，二战后进入高速成长期，形成集制造、销售、维修、服务于一体的完整工业体系。
But it's not just broadcasters who need connectivity. The fans inside a stadium or festival ground will use their mobile devices to contact friends, carry their tickets, navigate around the venue, and make payments.
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Kosmos 482 is now being closely tracked by international space agencies.
+sleep_min: float