3 sentences

1. 我是这里最年长的人。

   wǒ shì zhè​lǐ zuì​nián​zhǎng de rén.

   I'm the oldest person here.

   Source: OpenSubtitles

2. 他们中最年长的也不过才33岁。

   tā​men zhōng zuì​nián​zhǎng de yě bù​guò cái33 suì.

   The oldest among them was only 33 years old.

   Source: CCMatrix

3. 唯一的问题是：最年轻和最年长的这两代人几乎无法交流。

   wéi​yī de wèn​tí shì: zuì nián​qīng hé zuì​nián​zhǎng de zhè liǎng dài rén jī​hū wú​fǎ jiāo​liú.

   There is only one problem: The youngest and oldest generations can barely communicate with each other.

   Source: CCMatrix