Some potential employers may see warning signs if you announce that you earned your degree through the internet.

如果你声称自己的学位证书是通过网上学习获得的，有的潜在雇主会觉得这是个危险信号。

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We see the warning signs and signals when things get rough and difficult.

当事情变得艰难时，我们就会看到警告标志和信号。

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However, you will not see this warning if you use an industry standard certificate.

然而，如果您使用行业标准证书，则不会看到这个警告。

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But some investors see warning signs flashing.

WSJ: Dow Ends Lower in Late Selloff

He said the ha-ha was not illuminated or fenced and he did not see any warning signings.

BBC: Hopetoun House: Man sues over bat walk 'ha-ha' fall

Campaigners also want to see early warning cameras, which provide a 360-degree view around the vehicle, to be installed in trucks.

BBC: London