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单词 θ209616
释义
society > occupation and work > industry > building or constructing > building or providing with specific parts > specific parts built or constructed > [noun] > foundation(s) > chest used in laying underwater foundations (2)
pont1721

= caisson, n. 2a. Obsolete. rare.

pontoon1859

A float used in salvage and for other purposes, which can be lowered or raised by taking in or expelling water; = caisson, n. 2c 2d.

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更新时间:2025/1/24 8:51:54