even if they couldn't read them yet
There were signs and signals,(有一些迹象和信号存在) even if they couldn't read them yet.(即使他们尚无法解读) Perhaps three years ago(也许在三年前) ..
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undecipherable, what does in matter
... 有一些迹象和信号存在 There were signs , indications, 即使他们尚无法解读 undecipherable, what does in matter. 也许在三年前 Three years ago, , ...
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