The virus can also spread through sexual activity, and if people share injection devices.

VOA: special.2010.11.16

But what this study found was people were asked to estimate how much food they were consuming and how many calories they were burning through physical activity.

但是这个研究发现,当人们被要求估测,他们吃了多少食物,通过体育运动消耗多少卡路里时

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

As we'll discuss in the class, and most of you probably know this, your body weight is a function of how many calories you take in and how many calories you burn off through metabolic processes but also physical activity.

我们将会讲到,而且你们中的大部分人可能也知道,你的体重随着卡路里的摄取量,和代谢中的消耗量而变化,还跟肢体活动有关

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Mobile Devices: Use your iPhone, iPad or Cisco Cius Android device to start video conference calls, post your status, or stay informed through activity streams.

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Given the massive growth in the amount of data that is becoming available and the innovations of startups like WiseWindow that are making such data useful for business, it is only natural that the audience for consuming the insights gained from such data will be expanded through activity streams.

FORBES: New Sources for Business Surprises

They contribute through voluntary activity far more than adults and are deeply committed to and interested in the health services.

BBC: How we can help children improve their health