虽然这听起来很是未来派，但自由空间光系统绝不是一种新想法。
Futuristic though this sounds, FSO is by no means a new idea.
在家时，自由空间光系统可以结合内部照明状况来实现互联网的快速下载。
In the home, FSO could be used together with interior lighting to provide extremely fast Internet downloads.
自由空间光系统已经被应用于一些特定领域：譬如，让相距很近的办公室实现网络连接而不必铺设电缆。
FSO is already used in a few niches: to connect networks in nearby offices without having to string cables between them, for example.
自由空间光系统已经被应用于一些特定领域：譬如，让相距很近的办公室实现网络连接而不必铺设电缆。
FSO is already used in a few niches: to connect networks in nearby offices without having to string cables between them, for example.
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