In government laboratories and elsewhere, scientists are seeking a drug able to prolong life and youthful vigor.

在政府实验室和其他地方，科学家们正在寻找一种能够延长寿命、让人保持年轻活力的药物。

youdao

Centuries later, Marsilio Ficino similarly promoted drinking young blood as a means for the elderly to regain their youthful vigor.

几个世纪后，马西里奥·菲奇诺同样提倡饮酒，以此作为老年人恢复年轻活力的一种手段。

youdao

These girls are bursting with youthful vigor.

这些女孩充满青春活力。

youdao

Ryan, a 42-year-old fitness freak, also brings a youthful vigor to the campaign and is an energetic campaigner and debater.

CNN: Analysis: A bold but risky choice for running mate

McCain bristles when it is suggested that he might lack youthful vigor.

CNN: McCain faces questions on age, health

The unflattering shots of a tired Hillary Rodham Clinton during the 2008 primary campaign stood in stark contrast to the youthful vigor of her opponent, Barack Obama.

FORBES: Michele Bachmann & History Lessons