ultrapermanent

形容词 adj.
中文释义

英文释义

形容词 adj.
  1. Of great permanence; very long-lasting.
    — PVC, the hard plastic polymer polyvinyl chloride, “is not a long-term, ultrapermanent material,” he said.

词形变化

more ultrapermanent comparative most ultrapermanent superlative

词源

From ultra- + permanent.
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