3 sentences

1. 把棍子的两端都削尖。

   bǎ gùn​zi de liǎng​duān dōu xiāo​jiān.

   Sharpen a stick at both ends.

   Source: AI Challenger 2017

2. 这些管的两端都有镜子。

   zhè​xiē guǎn de liǎng​duān dōu yǒu jìng​zi.

   These tubes have mirrors on both ends.

   Source: CCMatrix

3. 每条线都有两端。

   měi tiáo xiàn dōu yǒu liǎng​duān.

   Every line has two ends.

   Source: CCMatrix