If we're not engaged as much in our normal work or school, we have extra time to call parents and grandparents.

如果我们没有忙于日常工作和学业，我们将有额外的时间给父母和祖父母打电话问候一下。

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If this extra security is not needed, it is possible to put a normal proxy server in the DMZ.

如果不需要这个额外的安全性，则可以在DMZ中放置一个普通代理服务器。

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"It's required for life, and I guess that's led people to think, well, if a normal amount is good, then extra might be better, " he said.

“水是生命之源，我猜这误导人们过度饮水，好吧，他们认为如果正常饮水有好处，那过量或许就更好了吧”他这样说。

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The city of Fairfield, which has three affected train stations, sent out a message telling commuters there will not be enough extra buses to handle normal passenger volume on Monday.

CNN: 9 still hospitalized after Connecticut train collision

They also showed that injecting normal mice with extra ghrelin increased the number of synapses in the hippocampus - and improved the animals' performance in several learning and memory tests.

BBC: NEWS | Health | Hunger pangs 'may trigger memory'

Luton Airport was operating as normal but passengers are advised to allow extra time for their journey to check in.

BBC: Gritting trucks out for more snow