ultraclean

English

ultra- +‎ clean

ultraclean (comparative more ultraclean, superlative most ultraclean)

Exceptionally clean.
- 2009, Jane E Brody, Babies Know: A Little Dirt Is Good for You (in the New York Times, 27 January 2009)
  "Children raised in an ultraclean environment," he added, "are not being exposed to organisms that help them develop appropriate immune regulatory circuits."

单词	ultraclean
释义	ultraclean English Etymology ultra- +‎ clean Adjective ultraclean (comparative more ultraclean, superlative most ultraclean) Exceptionally clean. 2009, Jane E Brody, Babies Know: A Little Dirt Is Good for You (in the New York Times, 27 January 2009) "Children raised in an ultraclean environment," he added, "are not being exposed to organisms that help them develop appropriate immune regulatory circuits."
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