It's a waste of time and energy.

那是浪费时间和精力。

《牛津词典》

He was a man of stupendous stamina and energy.

他是个有着一流耐力、精力充沛的人。

《柯林斯英汉双解大词典》

She seemed invigorated, full of life and energy.

她看来生气勃勃，满怀生命力和精力。

《柯林斯英汉双解大词典》

In the United States, many people are also giving their time and energy to collect money and goods for the earthquake victims.

VOA: special.2010.02.05

There's a sense of aliveness and energy, and in scientific terms everything is pure energy, so it's not that far-fetched.

有一种生机和能量，用科学的话来说，万物都是纯粹的能量，因此上面说法也不为过。

普林斯顿公开课 - 人性课程节选

And it's nice way to, you know, not be stressed out and just release some energy.

这是很好的方式，你知道，让自己不要压力过大，释放一些活力。

有趣的宿舍生活 - SpeakingMax英语口语达人

The players: entertainment and energy mogul Marvin Davis, the Pritzker family and MGM-Mirage owner Kirk Kerkorian.

FORBES: The Big Money Pit

The core CPI, which excludes volatile food and energy prices, rose 0.2%, which matched expectations.

FORBES: U.S. Housing Market Still Ugly

What about all those bureaucrats at the Department of Energy working on renewable energy and energy conservation?

FORBES: Tax My Carbon