caisson
noun /ˈkeɪsn/
  /ˈkeɪsɑːn/,  /ˈkeɪsn/
- a large concrete structure that does not allow water to get in, in which construction work can be done under water
- The caissons allowed us to protect the equipment and ensure safe exploration.
 
 
| 单词 | caisson | 
| 释义 | caissonnoun /ˈkeɪsn/   /ˈkeɪsɑːn/,  /ˈkeɪsn/ 
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