It is essential that this hub of home life has a very comfortable feeling to it.

至关重要的是，这个中心的家庭生活有一个非常舒适的感觉它。

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Especially in a manufacturing hub like Northeast Ohio exports are an essential element of the regional economy.

FORBES: Exporting Our Way To A Stronger U.S. Economy

Safe and efficient maritime commerce is essential to the growth and stability of this huge transportation hub.

FORBES: The Port of New York and New Jersey, a Critical Hub of Global Commerce

Closing the airport would likely create huge problems for civil aviation throughout Latin America's largest nation because Congonhas is a key hub, but prosecutors said the move is essential to ensuring air safety.

NPR: Brazilian Prosecutors Seek to Close Airport After Crash