丹尼尔·西格曼：海藻生长过程中需要氮，而海藻本身为海洋食物链中的其他生物提供养分。

Daniel Sigman: Algae require nitrogen to grow, and their bodies, in turn, fuel the rest of the ocean food web.

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海藻包括小到单细胞有机体、大到巨型褐藻的多种类型植物，有些海藻生长于海面附近，依赖氮元素成长。

Algae range in size from single-celled organisms to giant kelp plants. Some live near the surface of the ocean, and these algae need nitrogen to grow.

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污水中的营养物的确会加快海藻的生长速度。

Sewage nutrients do increase algal growth in the harbour.

《柯林斯英汉双解大词典》