This one is well hidden.

这个隐藏得很好。

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For one thing, some viruses may be too well hidden for scientists to see.

一方面，某些病毒可能隐藏太好以至于科学家难以发现。

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These tests can bring up some surprises that insiders thought were well hidden.

人们以为内部人员的考虑已天衣无缝，但是这些测试可以带来一些令人惊讶的结果。

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The people in her photographs show themselves, but a great deal about them remains hidden as well.

VOA: special.2009.08.09

But dreams always had a latent content as well, meaning the hidden implication of the dream.

但梦还具有潜性梦境，潜性梦境是指梦所隐藏的含义。

耶鲁公开课 - 心理学导论课程节选

Blatant self-promotion, in particular, has to be well hidden from Digg's cynical users, according to Neil Patel.

FORBES: Magazine Article

Synergies tend to be well hidden and hard to discover, while possessing the ability to mislead managers and investors alike.

FORBES: Magazine Article

Judge Susan Evans at Winchester Crown Court said the drugs were so well hidden that sniffer dogs could not trace them.

BBC: Isle of Wight ?90m cocaine yacht trial: Two men jailed