我发现工作和幸福感之间有着紧密的联系。

I found a strong ___connection between work and happiness.

这个地铁换乘站可快速直达机场。

The subway transfer station offers a quick ___connection to the airport here.

他在业内有很多人脉关系，这帮助他找到了新工作。

He has many professional ___connections in the industry, which helped him get the new job.