Passengers are being encouraged to check ahead with their airlines, to arrive an hour earlier than normal and to bring only a single carry-on bag with them.

VOA: standard.2009.12.27

It would definitely be wrong if we were doing this because little sanity check if you just got the single one it means what instead?

如果我们这样做就是错误的,一个小检查,如果你用单个“=“，是什么意思？

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