| 单词 | cofferdam | 
| 释义 | cofferdam cofferdam /ˈkɒf.ə.dæm/ aep /ˈkɑː.fɚ-/ noun [C] SPECIALIZED ► F0 a large box filled with air that allows people to work underwater, for example while building bridgesThesaurus+: ↑General and miscellaneous containersThesaurus+: ↑Bridges  | 
	
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