a log or plank, or a beam or plate of concrete or steel, fitting between vertical grooves in walls or piers to close a water channel.
| 单词 | θ3332 |
| 释义 | the world > the earth > water > lake > pool > [noun] > artificially confined water > contrivance for impounding water > plank or beam (1) stop log1930 a log or plank, or a beam or plate of concrete or steel, fitting between vertical grooves in walls or piers to close a water channel. |
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