2 sentences for 半月 (bàn​yuè)

1. 他在外地出差了半月才回来。

   tā zài wài​dì chū​chāi le bàn​yuè cái huí​lai.

   He was away on a business trip for half a month before returning.

   Source: Dong Chinese Dictionary

2. 夜空中挂着一轮明亮的半月。

   yè​kōng zhōng guà zhe yī lún míng​liàng de bàn​yuè.

   A bright half-moon hung in the night sky.

   Source: Dong Chinese Dictionary