PREVIEW
... he saw this machine, a look of surprise crossed his face.
"This is... a pollution detection device," the burly man said, "a tool used by the Pioneer Force in the past to check if they had been contaminated."
Carl was puzzled, "If it's just for detecting pollution, why is it so big?"
"Because detection is just one of its purposes," the burly man spoke in a deep voice. "Its more direct effect is to eliminate the pollution once it's detected."
"Eliminate the polluti ...
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