The bathyal zone is the dimly lit middle zone, which because it has little sunlight does not contain photosynthesizing producers.
半深海区是微暗发亮的中央地域，因为它没有进行光合作用生产者。
The bathyal zone is the dimly lit middle zone, which because it has little sunlight does not contain photosynthesizing producers.
半深海区是微暗发亮的中央地域，因为它没有进行光合作用生产者。
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