橱柜门吱吱作响，可能是铰链需要更换了。

The cabinet door is creaking; perhaps the ___hinge needs replacing.

有效的沟通是团队合作的基石。

Effective communication is the ___hinge of successful teamwork.

我们的旅行计划完全取决于天气情况。

Our travel plans ___hinge entirely on the weather conditions.