It is sometimes advantageous to be unseen, although it is most often rather wearing on the nerves.

虽然人们更多时候宁愿神经紧张，但有些时侯看不见是挺好的。

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When a person does a certain thing again and again, he'll be obliged to do it in the same way by some unseen force. Thus habit is formed.

当一个人反复的做某件事时，他就会被某种看不见的力量驱使不得不以同样的方式再去做这件事，于是习惯就形成了。

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Also note that there is no "junk drawer" for unseen notifications, users only get one chance to see it.

注意，并不存在一个收集未读通知的“杂物抽屉”，所以用户只有一次机会看到通知。

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There was the distinct wet slap of a pipistrelle's echolocation as it flew unseen among the nearby trees.

BBC: NEWS | UK | Scotland | Highlands and Islands | Seeking 'a wet slap' in the dark

Now we spend it sight unseen!

FORBES: Fiscal Cliff In Verse

"It's underground, it's unseen and we're uncertain as to what's under there, " said John Lyons, the county's director of public works.

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