euphotic zone The surface waters of the sea or of a lake where enough light penetrates for photosynthesis to occur, down to about 80 metres.是什么意思_euphotic zone The surface waters of the sea or of a lake where enough light penetrates for photosynthesis to occur, down to about 80 metres.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句