Cross-Jack Yard Blocks: Shows the cross-jack yard and the blocks that are stropped over the yard, the slings, topsail sheet block, leech line block, and the lift blocks.是什么意思_Cross-Jack Yard Blocks: Shows the cross-jack yard and the blocks that are stropped over the yard, the slings, topsail sheet block, leech line block, and the lift blocks.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句