In the exam there's sure to be a question on energy.
考试时准有关于能量的题目。
It's a waste of time and energy.
那是浪费时间和精力。
He has carried out extensive research into renewable energy sources.
他已经对再生能源进行了广泛研究。
Her mother was a resourceful and energetic woman.
她母亲是一个足智多谋、精力充沛的女人。
The company is trying to create a young energetic image.
这家公司正试图塑造一个充满活力的年轻形象。
He knew I was energetic and dynamic and would get things done.
他知道我精力充沛、生气勃勃，会把事情办成的。