Tones Matter, Ya.

 虽然鸭子很雅的,但是它们没有牙齿.所以它们比人类亚的.

Suīrán yāzi hěn yǎ de, dànshì tāmen méiyǒu yáchǐ. Suǒyǐ tāmen bǐ rénlèi yà de.

 

Google and Baidu agree. "Although ducks are very elegant, they have no teeth, so they are inferior to humans."

 

ducks ya1 鸭子 ya1zi

ya2 teeth 牙齿 ya2chi

ya3 elegant 雅美 ya3mei

ya4 inferior  亚 ya4