ultraclean

形容词 adj.
中文释义

英文释义

形容词 adj.
  1. Exceptionally clean.
    — "Children raised in an ultraclean environment," he added, "are not being exposed to organisms that help them develop appropriate immune regulatory circuits."

词形变化

more ultraclean comparative most ultraclean superlative

词源

Etymology tree
English ultra-
Proto-West Germanic *klainī
Old English clǣne
Middle English clene
English clean
English ultraclean
From ultra- + clean.
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