3 sentences

1. 你以为我是活字典吗？

   nǐ yǐ​wéi wǒ shì huó​zì​diǎn ma?

   Do you think that I am a walking dictionary?

   Source: AI Challenger 2017

2. 她是本活字典。

   tā shì běn huó​zì​diǎn.

   She is a walking dictionary.

   Source: AI Challenger 2017

3. 那个老人，这么说吧，是一本活字典。

   nà​ge lǎo​rén, zhè​me shuō ba, shì yī​běn huó​zì​diǎn.

   That old man is, so to speak, a walking dictionary.

   Source: CCMatrix