A bar fixed transversely in a fish ladder in order to enable fish to ascend a waterfall or dam. Obsolete. rare.
| 单词 | θ54830 |
| 释义 | the world > food and drink > farming > animal husbandry > fish-keeping, farming, or breeding > [noun] > other fish-rearing equipment (3) riffle1872 A bar fixed transversely in a fish ladder in order to enable fish to ascend a waterfall or dam. Obsolete. rare. raceway1877 An artificial channel of running water for rearing fish. grille1883 Pisciculture. A wooden frame fitted with glass tubes, between which the fish-eggs lie during incubation. |
| 随便看 |
英语词典包含1132095条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。