4 sentences

1. 他的腿被鳄鱼咬了。

   tā de tuǐ bèi è​yú yǎo le.

   His leg was bitten by a crocodile.

   Source: Tatoeba

2. 你了解鳄鱼吗？

   nǐ liǎo​jiě è​yú ma?

   Do you know anything about crocodiles?

   Source: OpenSubtitles

3. 鳄鱼虽然名字里有鱼，但它是爬行动物。

   è​yú suī​rán míng​zi lǐ yǒu yú, dàn tā shì pá​xíng dòng​wù.

   Although its name contains the word 'fish' in Chinese, a crocodile is a reptile.

   Source: Dong Chinese Dictionary

4. 这条河里有很多鳄鱼，千万不要下去游泳。

   zhè tiáo hé lǐ yǒu hěn​duō è​yú, qiān​wàn bù yào xià​qù yóu​yǒng.

   There are many crocodiles in this river; whatever you do, don't go swimming there.

   Source: Dong Chinese Dictionary