sea·cock 
(sēkŏk′)
(sēkŏk′)n.
A valve in the hull of a boat or ship that may be opened to let in or discharge water, as in filling or emptying a ballast tank.
| 单词 | seacock |
| 释义 | sea·cock (sēkŏk′)n. A valve in the hull of a boat or ship that may be opened to let in or discharge water, as in filling or emptying a ballast tank. |
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