4 sentences for 扣 (kòu — fasten)

1. 这种连环扣很难解开。

   zhè zhǒng lián​huán kòu hěn nán jiě​kāi.

   This kind of puzzle ring is very hard to undo.

   Source: Dong Chinese Dictionary

2. 他正忙着扣衬衫的扣子。

   tā zhèng máng zhe kòu chèn​shān de kòu​zi.

   He is busy buttoning his shirt.

   Source: Dong Chinese Dictionary

3. 我扣不上这个扣子。

   wǒ kòu bù shàng zhè gè kòu​zi.

   I can't do this button.

   Source: OpenSubtitles

4. 这个铁链是由一个个小环扣起来的。

   zhè gè tiě​liàn shì yóu yī gè​gè xiǎo huán kòu qi​lai de.

   This iron chain is made of small rings linked together.

   Source: Dong Chinese Dictionary