4 sentences

1. 警察破获了一宗跨国走私案。

   jǐng​chá pò​huò le yī zōng kuà​guó zǒu​sī'àn.

   The police solved a transnational smuggling case.

   Source: Dong Chinese Dictionary

2. 警方破获了一起特大走私案。

   jǐng​fāng pò​huò le yī qǐ tè​dà zǒu​sī'àn.

   The police cracked a major smuggling case.

   Source: Dong Chinese Dictionary

3. 警方破获了一起大规模的黄金走私案。

   jǐng​fāng pò​huò le yī qǐ dà​guī​mó de huáng​jīn zǒu​sī'àn.

   The police cracked a large-scale gold smuggling case.

   Source: Dong Chinese Dictionary

4. 警方经过缜密的调查，终于侦破了这起特大走私案。

   jǐng​fāng jīng​guò zhěn​mì de diào​chá, zhōng​yú zhēn​pò le zhè qǐ tè​dà zǒu​sī'àn.

   After a thorough investigation, the police finally solved this major smuggling case.

   Source: Dong Chinese Dictionary