现在它们就象久无音信的老朋友又回来了。
而它们又回来了，就像久无音信的朋友又回来了，我如此喜爱的歌。
But they are back again, just like a long-lost friend, all the songs I've loved so well.
我的话费充值系统多给客人充了30块钱，联系买家无音信怎么办？
My prepaid recharge system will give the guests filled the 30 money, contact the buyer not been seen how to do?
侧音测距系统的最大无模糊距离受到侧音信号最低频率的限制。
The unambiguous distance of tone ranging system is limited by the lowest frequency of tone.
侧音测距系统的最大无模糊距离受到侧音信号最低频率的限制。
The unambiguous distance of tone ranging system is limited by the lowest frequency of tone.
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