2 sentences

1. 他那一副奴才相，真让人看不起。

   tā nà yī fù nú​cai xiàng, zhēn ràng rén kàn​bu​qǐ.

   His servile manner is truly despicable.

   Source: Dong Chinese Dictionary

2. 清代某些官员在皇帝面前自称奴才。

   Qīng​dài mǒu​xiē guān​yuán zài huáng​dì miàn​qián zì​chēng nú​cai.

   In the Qing Dynasty, certain officials referred to themselves as 'your servant' before the emperor.

   Source: Dong Chinese Dictionary