sister block
plural of sluice
(nautical) A tackle block having two sheaves, one above the other.
(now sciences, chiefly medicine) The agent noun derived from verb. / An adjective corresponding to a noun in -ance, having the sense of exhibiting (the condition or process described by the noun).
exhibiting (the condition or process described by the noun)
Any of several geopolitical subdivisions that encompass several others.
乗組員は嵐が来る前に摩耗した上下二枚の滑車を備えたブロックを交換して、ハリヤードがスムーズに動くようにした。
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