3 sentences for 口岸 (kǒu'àn — border post)

1. 大批货物正在口岸等待通关。

   dà pī huò​wù zhèng​zài kǒu'àn děng​dài tōng​guān.

   A large amount of goods is waiting for customs clearance at the port.

   Source: Dong Chinese Dictionary

2. 瑞丽是中国与缅甸边境的重要口岸。

   Ruì​lì shì Zhōng​guó yǔ Miǎn​diàn biān​jìng de zhòng​yào kǒu'àn.

   Ruili is an important port on the border between China and Myanmar.

   Source: Dong Chinese Dictionary

3. 这个边境口岸每天处理成千上万的过境旅客。

   zhè gè biān​jìng kǒu'àn měi tiān chǔ​lǐ chéng​qiān​shàng​wàn de guò​jìng lǚ​kè.

   This border port processes thousands of cross-border travelers every day.

   Source: Dong Chinese Dictionary