1. 力氣;力量
    Energy is the ability and strength to do active physical things and the feeling that you are full of physical power and life.

energy

    e.g. He was saving his energy for next week's race in Belgium...
           他正為下周在比利時(shí)的比賽養(yǎng)精蓄銳。
    e.g. We try to boost our energy by eating.
           我們?cè)噲D通過吃東西來增強(qiáng)體力。

2. 毅力；活力
    Energy is determination and enthusiasm about doing things.

    e.g. At 54 years old her energy and looks are magnificent...
           她54歲了，精力和氣色都非常好。
    e.g. You have drive and energy for those things you are interested in.
           你對(duì)那些感興趣的事情干勁十足。

3. 努力;精力
    Your energies are your efforts and attention, which you can direct towards a particular aim.

energy

    e.g. She had started to devote her energies to teaching rather than performing...
           她已經(jīng)開始將精力從表演轉(zhuǎn)移到教學(xué)中。
    e.g. We must concentrate our energies on treating addiction first.
           我們必須首先集中精力治療毒癮。

4. 能量;能源
    Energy is the power from sources such as electricity and coal that makes machines work or provides heat.

    e.g. ...those who favour nuclear energy...
           那些支持利用核能的人
    e.g. Oil shortages have brought on an energy crisis...
           石油短缺已經(jīng)造成了能源危機(jī)。