Geo-engineering has been shown to work, at least on a small localised scale.
地质工程已被证明是有效的，至少在一个小的局部范围内。
It has been proved that the system is efficient for small scale real-time communication.
结果证明对于小型的实时通讯来说，系统是有效的。
It has been proved that the system is efficient for small scale real-time communication.
结果证明对于小型的实时通讯来说，系统是有效的。
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