2 sentences

1. 这座城市自古以来就是一个商贾云集的海口。

   zhè zuò chéng​shì zì​gǔ​yǐ​lái jiù shì yī gè shāng​gǔ yún​jí de hǎi​kǒu.

   Since ancient times, this city has been a seaport where merchants gather.

   Source: Dong Chinese Dictionary

2. 丝绸之路上商贾往来不断，极大促进了东西方的贸易交流。

   Sī​chóu​zhī Lù shàng shāng​gǔ wǎng​lái bù​duàn, jí dà cù​jìn le dōng​xī​fāng de mào​yì jiāo​liú.

   The constant stream of merchants along the Silk Road greatly promoted trade and exchange between the East and the West.

   Source: Dong Chinese Dictionary