signal bad machine, difficult to say how the whole may be geographical, or China Unicom mobile phone card is also the difference between a certain signal, can only teach you a way to take it dead cell phone antenna to get tight Repair Shop . If there is not embarrassed, a good bar for the Department of the signal.
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But if CAPTCHAs are broken it might not be a bad thing, because it would signal a breakthrough in machine vision that would, for example, make automated book-scanners far more accurate.
而验证码系统被破解倒也未尝不是一件好事，因为这标志着机器视觉取得突破，或许，自动书刊扫描系统将由此变得远比现在精准。
The signal of this machine is always bad. I guess something is wrong with the transmission lines.
这台机器的信号总是不好，我估计是传输线的问题。
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