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| 长距离通信 | |||
| 长途通信 (long-haul communication 的原意为性能更高，距离更远,业务量更大的长途通信) | |||
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| 长距离通信 | |||
| long-haul communication: 3 phrases in 2 subjects |
| Aviation | 1 |
| Space | 2 |
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