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rarefied
adj
rarefy
v
rare
adj
例
The rarefied environment at the mountaintop led to a dramatic decrease in available oxygen.
The rarefied atmosphere of the observatory was essential for accurate astronomical observations.
The climbers struggled to breathe in the rarefied air at the summit of Mount Everest.
He was unaccustomed to the rarefied air of the high-altitude environment and felt dizzy.
