A third type of mountain may be formed as a result of volcanic activity which occurs in regions of active fold mountain belts, such as in the Cascade Range of western North America.

第三种类型的山可能是由于火山活动形成的，一般发生在活动性褶皱带地区，如北美西部的喀斯喀特山脉。

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After a day of air and activity, you should be in the mood for a good meal.

在户外活动了一天，你应该想好好吃一顿。

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The results also show that the proteins would be absorbed by the body, allowing the in vivo antihypertensive activity to occur.

结果还指出，蛋白质会被人体吸收，使抗高压的活动在体内发生。

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Other scientists have shown that sun spot activity can be measured in periods of time that last about eleven years.

VOA: special.2009.09.29

Walking is something you can do with others, in the sense that it can be a joint activity,a joint undertaking.

走路是一件你能和他人一起做的事，这是一个共同合作的行为和事件。

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And on the right is showing you what pattern of activity would be in a controlled brain in most view.

在右边，我们看到控制组大脑的大部分视图,能看出其活动的模式。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

Lobbying firms in Washington are said to be engaged in frenetic activity on behalf of private insurers, encouraging congressmen and senators to resist radical reform.

ECONOMIST: Barack Obama tries to sell health-care reform to doctors

In the short term, the sort of fiscal loosening implied by Mr Bush's plans might be helpful in boosting activity.

ECONOMIST: Squaring the circle | The

It also says a person using force cannot provoke the attacker or be involved in criminal activity at the time.

MSN: Texas man gets 40 years in Stand Your Ground case