3 sentences

1. 他们吃植物、藻类和小鱼。

   tā​men chī zhí​wù, zǎo​lèi hé xiǎo​yú.

   They eat plants, algae, and small fish.

   Source: CCMatrix

2. 它们喜欢吃藻类。

   tā​men xǐ​huan chī zǎo​lèi.

   They like to eat algae.

   Source: CCMatrix

3. 在过去的几年里，科学家一直在努力把藻类转化为生物燃料。

   zài guò​qù de jǐ​nián li, kē​xué​jiā yī​zhí zài nǔ lì bǎ zǎo​lèi zhuǎn​huà wéi shēng​wù​rán​liào.

   For the past few years, scientists have been working on converting algae into biofuel.

   Source: UM-Corpus: Education