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单词 ruby hole
释义

Definition of ruby hole in English:

ruby hole

noun
historical
  • A small hole cut in a piece of ruby, especially in a watch escapement.

Origin

Mid 18th century.

 
 

Definition of ruby hole in US English:

ruby hole

noun
historical
  • A small hole cut in a piece of ruby, especially in a watch escapement.

Origin

Mid 18th century.

 
 
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更新时间:2024/12/23 19:14:14