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We do not even know if they still exist, " insisted Arvid."
我们甚至不知道它们是否还存在。
youdao
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Then the world we know, anxieties and problems we meet, do they really exist?
我们所了解的世界、烦恼、问题，确定都是真的吗？
youdao
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Then the world we know, anxieties and problems we meet, do they really exist?
我们所了解的世界、烦恼、问题，确定都是真的吗？
youdao