1 sentence

1. 我有一个朋友在刚果援建铁路，已经两年没回家了。

   wǒ yǒu yī gè péng​you zài Gāng​guǒ yuán​jiàn tiě​lù, yǐ​jīng liǎng nián méi huí​jiā le.

   I have a friend who is helping build a railway in the Congo and hasn't been home for two years.

   Source: Dong Chinese Dictionary