nexus

科学家们发现了压力与心脏病之间显著的关联。

Scientists have identified a clear ___nexus between stress and heart disease.

互联网已经成为现代信息交流的重要枢纽。

The internet has become a crucial ___nexus for modern information exchange.

新加坡长期以来一直是亚欧之间海上贸易的关键枢纽。

Singapore has long served as a crucial ___nexus for maritime trade between Asia and Europe.