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词汇
sandwich board
释义
sandwich board
n.
(名词)
Two large boards bearing placards, hinged at the top by straps for hanging over the shoulders with one board in front and the other behind, used for picketing or advertising.
三明治式广告牌:两块带有公告的广告牌子,用带子拴在其顶部挂在肩上,一块在胸前,一块在背后,用于示威或广告
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sodium borate
sodium carbonate
sodium chlorate
sodium chloride
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sodium dichromate
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sodium hydrosulfite
sodium hydroxide
sodium hypochlorite
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sodium-potassium pump
sodium propionate
sodiums
sodium silicate
sodium sulfate
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更新时间:2026/8/24 11:31:44