4 sentences

1. 它们能生存数月之久。

   tā​men néng shēng​cún shù​yuè zhī​jiǔ.

   They can survive for months.

   Source: CCMatrix

2. 我不知道我已离开了7个小时之久。

   wǒ bù​zhī​dào wǒ yǐ lí kāi le7 ge xiǎo​shí zhī​jiǔ.

   I didn’t realize I had been gone for seven hours.

   Source: CCMatrix

3. 人类已经着迷于黄金的美丽几千年之久。

   rén​lèi yǐ​jing zháo mí yú huáng​jīn de měi​lì jǐ qiān​nián zhī​jiǔ.

   Humans have been fascinated by the beauty of gold for thousands of years.

   Source: CCMatrix

4. 两人同居9年之久。

   liǎng rén tóng​jū9 nián​zhī​jiǔ.

   The two lived together for nine years.

   Source: CCMatrix