threader

名词 n.
中文释义

英文释义

名词 n.
  1. A device used to thread needles.
  2. A device used to machine a screw thread.

词形变化

threaders plural

词汇关系

衍生词
needle threader

词源

Etymology tree
English thread
English -er
English threader
From thread + -er.
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