这个隐藏得很好。
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。
If she did use any secret safety equipment, it's certainly well hidden from the naked eye.
如果她的确使用了一些秘密的安全装备，那肯定隐藏得很好，让人看不见。
If she did use any secret safety equipment, it's certainly well hidden from the naked eye.
如果她的确使用了一些秘密的安全装备，那肯定隐藏得很好，让人看不见。
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