| 单词 | rack block |
| 释义 | Definition of rack block in English:rack blocknoun Nautical
OriginLate 18th century; earliest use found in David Steel (fl. 1765–1810). Definition of rack block in US English:rack blocknoun Nautical
OriginLate 18th century; earliest use found in David Steel (fl. 1765–1810). |
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