The students work with activities on their computer screen and wear a headset and microphone to talk to their tutor.

VOA: special.2011.04.21

It brought about fundamental alterations, slowly, in ways sometimes people didn't even know it's happening; fundamental alterations in aspirations, in habits, in activities, in conceptions and definitions of work, and leisure.

带来基本的,缓慢的改变,以一种人们通常无法觉察到的方式,这样根本的改变的有愿望,习惯,行动,观念,还有,对工作,闲暇的定义

耶鲁公开课 - 美国内战与重建课程节选

and they asked about my work ethic and my extra-curricular activities I did.

然后他们问我的职业道德怎么样，还有我参加过的课外活动。

收到了录取通知书 - SpeakingMax英语口语达人

Cholinesterase inhibitors may work by protecting a chemical messenger needed for brain activities.

VOA: special.2009.09.15

Out of all the genes that are on the human genome which fraction is this particular cell using, which fraction is it expressing determines what proteins are present in the cell, determines what work or what activities the cell can engage in.

人类基因组全部基因中的,特定细胞所表达的基因片段,细胞表达的是哪段基因,决定了细胞中存在什么样的蛋白,决定了细胞会有什么样的功能,或者参与何种生命活动

耶鲁公开课 - 生物医学工程探索课程节选

The young people here are hard at play, and the Muslim elders are hard at work trying to keep them engaged in positive activities.

VOA: standard.2009.12.20

Reif says this improved cooperation is expected to help the U.S.and Russia fight nuclear terrorism and work toward tougher sanctions on Iran for its nuclear activities.

VOA: standard.2010.04.04

Kenyan national Wangari Maathai won the 2004 Nobel Peace Prize for her work in the Green Belt Movement, an organization that engages in tree-planting activities and environment conservation.

VOA: standard.2010.02.24

The study suggests that the Obama administration work with Middle Eastern allies to repeal laws that restrict citizen freedoms, hinder political activities or suppress freedom of expression and assembly.

VOA: standard.2010.05.19