重点词汇
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沉箱
caisson; underwater chamber; submerged box; sinking box
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码头
dock; wharf; quay; pier; jetty; landing stage; waterfront; levee; hoverport
caisson wharf
沉箱
caisson; underwater chamber; submerged box; sinking box
码头
dock; wharf; quay; pier; jetty; landing stage; waterfront; levee; hoverport