2 sentences for 结 (jié — knot)

1. 他在绳子的末端打了一个结。

   tā zài shéng​zi de mò​duān dǎ le yī gè jié.

   He tied a knot at the end of the rope.

   Source: Dong Chinese Dictionary

2. 只要查明了问题的症结，解决起来就不难了。

   zhǐ​yào chá​míng le wèn​tí de zhēng jié, jiě​jué qi​lai jiù bù nán le.

   Once the crux of the problem is identified, it won't be hard to solve.

   Source: Dong Chinese Dictionary