Maintaining that level energy and vigor is of great concern to men of all ages.

对各个年龄层的男人来说，保持高水平的精力和活力非常重要。

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Achieving success at this level requires a commitment of time and energy.

取得这种水平的成就需要花费时间和精力。

《牛津词典》

Gathering your resources to "try hard" requires burning energy in order to overcome your currently low arousal level.

调动资源来“努力尝试”，需要消耗精力，以克服目前的低唤醒水平。

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They have a material that supplies electrons and a power source that lifts the energy level of those electrons.

VOA: special.2010.09.01

I want to go back to our energy level diagrams and see if I can rationalize energy level diagrams.

让我们往回看，回到我们的能级图表,来看看我是否能使能级图表合理化些。

麻省理工公开课 - 固态化学导论课程节选

And instead of having the electron giving off energy as a photon, instead now the electron is going to take in energy from light and move up to that higher level.

与电子以光子形式施放能量不同,我们现在要从光中,获得能量到一个更高的能级。

麻省理工公开课 - 化学原理课程节选

When a dog's energy level is higher than the owner's energy level, it can lead to problems.

CNN: 'Dog Whisperer' Cesar Millan on adopting the right dog

There are ways to get refills without waiting or paying, as players receive full energy upon a level up and energy potions can be acquired in a variety of other ways within the confines of the game.

FORBES: Guardian Cross Is Monster Collecting, Card Battling Fun

In each layer, electrons exist at a different level of energy, determined by the layer's thickness.

ECONOMIST: Lasers