铁路是这个国家南北之间的重要连接线。

The railway is a crucial ___link between the north and south of the country.

这项研究揭示了饮食与健康之间的重要联系。

The study revealed a significant ___link between diet and health.

这个项目的每个环节都必须按时完成。

Every ___link in this project must be completed on time.

这篇文章中的链接可以带你到官方网站。

The ___link in this article will take you to the official website.