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单词 keelson
释义
keel·son (kēlsən, kĕl-) also kel·son (kĕl-)
n.
Nautical
A timber or girder fastened above and parallel to the keel of a ship or boat for additional strength.

[Alteration (influenced by KEEL1) of Middle English kelswin, probably from Old Norse *kjölsvīn : kjölr, keel + svīn, swine, timber; see sū- in the Appendix of Indo-European roots.]
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