Designating or relating to regions of the water and bed of a lake where light penetration is insufficient to sustain photosynthesis.
| 单词 | θ3386 |
| 释义 | the world > the earth > water > lake > [adjective] > bed of (1) profundal1914 Designating or relating to regions of the water and bed of a lake where light penetration is insufficient to sustain photosynthesis. |
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