3 sentences

1. 也许你应该去看专科医生。

   yě​xǔ nǐ yīng​gāi qù kàn zhuān​kē yī​shēng.

   Maybe you should see a specialist.

   Source: OpenSubtitles

2. 他是心脏病方面的专科医生。

   tā shì xīn​zàng​bìng fāng​miàn de zhuān​kē yī​shēng.

   He is a specialist in cardiology.

   Source: Dong Chinese Dictionary

3. 她高中毕业后考上了一所电力专科学校。

   tā gāo​zhōng bì​yè hòu kǎo​shàng le yī suǒ diàn​lì zhuān​kē xué​xiào.

   After graduating from high school, she was admitted to a vocational college specializing in electric power.

   Source: Dong Chinese Dictionary