1 sentence

1. 海藻在海洋生态系统中起着非常重要的作用。

   hǎi​zǎo zài hǎi​yáng shēng​tài xì​tǒng zhōng qǐ zhe fēi​cháng zhòng​yào de zuò​yòng.

   Seaweed plays a very important role in the marine ecosystem.

   Source: Dong Chinese Dictionary