vitality是什么意思？

But even if people are able to economically support a retirement at 65, over thirty years of potential inactivity is harmful to cognitive (认知的) and emotional vitality.

Just lengthening that second stage of full-time work may secure the financial assets needed for a 100-year life, but such persistent work will inevitably exhaust precious intangible assets such as productive skills, vitality, happiness, and friendship.

The rising numbers signify growing vitality in foreign markets – when we import more stuff, it puts more cash in the hands of people around the world, and U.S. exports are rising because more foreigners have the ability to buy the things we produce and market.