4 sentences

1. 她是同类中的第一个。

   tā shì tóng​lèi zhōng de dì​yī​gè.

   She's the first of her kind.

   Source: OpenSubtitles

2. 这种动物通常不会攻击自己的同类。

   zhè zhǒng dòng​wù tōng​cháng bù huì gōng​jī zì​jǐ de tóng​lèi.

   This animal usually does not attack its own kind.

   Source: Dong Chinese Dictionary

3. 我们应当把同类的文件整理在一起。

   wǒ​men yīng​dāng bǎ tóng​lèi de wén​jiàn zhěng​lǐ zài​yī​qǐ.

   We should organize similar files together.

   Source: Dong Chinese Dictionary

4. 目前市场上的同类产品已经处于饱和状态。

   mù​qián shì​chǎng shàng de tóng​lèi chǎn​pǐn yǐ​jīng chǔ​yú bǎo​hé zhuàng​tài.

   Similar products on the market have already reached a point of saturation.

   Source: Dong Chinese Dictionary