Mario games are in their 20s. They act young still.

他们依然表现得很年轻，可是我老了的时候，不想总是表现得年轻。

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Similarly, someone with a young spouse may think and act young, to the benefit of their body.

同理，有年轻配偶的那些人的心态和行为会表现得年轻，这也有助于他们的身体健康。

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Parents of very young children know this: You catch your child in the act of stealing the cookie the evidence of candy written on his or her face.

小孩子的父母都知道这一点：当你发现你的孩子正在偷饼干的时候，他或她的脸上写着糖果的痕迹。

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The aim was to get people young and old across the United States to act locally in solving environmental problems in their areas.

VOA: special.2010.04.21

The governing of a distress call is actually an extremely delicate high-wire act for any young organism from an evolutionary point of view.

事实上，发出求救信号,是极其危险的行为,从进化的角度看,对任何一个年轻的生物体。

耶鲁公开课 - 心理学导论课程节选

As a young performer, he had a song and dance act with partners for a while.

VOA: special.2009.03.09

"He looks young on the podium, but he doesn't act young, " L.A. Philharmonic violist Dana Hansen says.

NPR: Dudamel Leads L.A. Philharmonic In Concert

The one notable act of his young government in Bonn has been to propose a bill to make it easier for foreigners to gain German citizenship.

ECONOMIST: The road from Hesse | The

Mr Clark argued that the government had to enable more homes to be built and that failure to act would tell young families that "the property-owning democracy was for our generation, not for theirs".

BBC: Minister: Planning changes 'sorely needed'