2 sentences

1. 不要躲在门后偷听别人说话。

   bù yào duǒ zài mén hòu tōu​tīng bié​ren shuō​huà.

   Don't hide behind the door and eavesdrop on others.

   Source: Dong Chinese Dictionary

2. 敌方正在偷听我们的无线电频道。

   dí​fāng zhèng​zài tōu​tīng wǒ​men de wú​xiàn​diàn pín​dào.

   The enemy is eavesdropping on our radio channel.

   Source: Dong Chinese Dictionary