1 sentence

1. 海盗在公海上横行，威胁着商船的安全。

   hǎi​dào zài gōng​hǎi shàng héng​xíng, wēi​xié zhe shāng​chuán de ān​quán.

   Pirates run rampant on the high seas, threatening the safety of merchant ships.

   Source: Dong Chinese Dictionary