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trunnel是什么意思

trunnel

美['trʌnəl]  英['trʌnəl]
n.  (=treenail)(造船用的)大木钉
  近义词:treenail,trenail,

英英释义

Noun
  1. a wooden peg that is used to fasten timbers in shipbuilding; water causes the peg to swell and hold the timbers fast
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