3 sentences

1. 鱼和蝌蚪都有鳃。

   yú hé kē​dǒu dōu yǒu sāi.

   Both fish and tadpoles have gills.

   Source: AI Challenger 2017

2. 它们看起来像泪珠或蝌蚪。

   tā​men kàn​qi​lai xiàng lèi​zhū huò kē​dǒu.

   They look like teardrops or tadpoles.

   Source: CCMatrix

3. 蝌蚪变成蛙，它的尾巴就逐渐被吸收掉。

   kē​dǒu biàn​chéng wā, tā de wěi​ba jiù zhú​jiàn bèi xī​shōu diào.

   As a tadpole changes into a frog, its tail is gradually absorbed.

   Source: UM-Corpus: Education