My colleagues and I are studying something called augmented reality (a field of computer research dealing with the combination of real-world and virtual reality)," said Christopher Dede, professor in learning technologies at Harvard University, "Alien Contact," for example, is an exercise developed for middle-school students who use hand-held devices that can determine their location.
出自-2013年6月閱讀原文
Because so many of our modern technologies and services depend on oil, nations, corporations, and institutions that control the trade in oil exercise extraordinary power
出自-2013年6月閱讀原文
We learn from the passage that in today's world, whoever monopolizes the oil market will be able to exercise extraordinary power.
出自-2013年6月閱讀原文
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VERB
運用;行使
If you exercise something such as your authority, your rights, or a good quality, you use it or put it into effect.
例句
They are merely exercising their right to free speech...
他們只是在行使他們的言論自由權。
'The powers delegated to me,' the President said, 'will be exercised with due responsibility.'...
“賦予我的權力，”總統說，“我將盡責履行。”
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VERB
活動;運動;鍛煉
When you exercise, you move your body energetically in order to get fit and to remain healthy.
例句
She exercises two or three times a week...
她每周鍛煉兩三次。
Never keep on exercising if you have even the slightest chest pain...
即使你只感到很輕微的胸部疼痛，也不要繼續鍛煉。
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VERB
鍛煉（身體部位）
If a movement or activity exercises a part of your body, it keeps it strong, healthy, or in good condition.
例句
They call rowing the perfect sport. It exercises every major muscle group.
他們稱劃船是最佳運動，它可以鍛煉每一處主要肌肉群。
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N-COUNT
鍛煉;練習
Exercises are a series of movements or actions which you do in order to get fit, remain healthy, or practise for a particular physical activity.
例句
These stomach exercises will tighten abdominal muscles...
這些腹部練習會增強腹肌。
I do special neck and shoulder exercises...
我做專門的頸部和肩部運動。
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N-COUNT
演習;操練
Exercises are military activities and operations which are not part of a real war, but which allow the armed forces to practise for a real war.
例句
General Powell predicted that in the future it might even be possible to stage joint military exercises...
鮑威爾將軍預測將來甚至可能舉行聯合軍事演習。
The military truck was taking 14 men on exercise in a remote area of Norway.
那輛軍用卡車正載著14名士兵到挪威的一個偏遠地區進行操練。
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N-COUNT
練習;習題
An exercise is a short activity or piece of work that you do, for example in school, which is designed to help you learn a particular skill.
例句
Try working through the opening exercises in this chapter...
做一做本章節的開篇習題。
He took up piano lessons, combining standard classical exercises with his own attempts at Gershwin.
他上鋼琴課，一邊進行標準的經典作品的練習，一邊自己嘗試練習格什溫的作品。
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N-PLURAL
儀式；典禮
Exercises is an official ceremony, in which people make speeches and present awards.
例句
Vicky and Gary attended the graduation exercises at Columbia.
維基和加里參加了哥倫比亞大學的畢業典禮。
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N-COUNT
（尤指非預期的）活動，情況
If you describe an activity as an exercise in a particular quality or result, you mean that it has that quality or result, especially when it was not intended to have it.
例句
Her morning was an exercise in indecision. She tried on everything in her closet but couldn't remember what he'd liked...
她整個早晨都猶豫不決。她試穿了衣櫥中的所有衣服，卻不記得他喜歡哪一件。
As an exercise in stating the obvious, this could scarcely be faulted...
這說的都是些顯而易見的事情，幾乎不可能出錯。
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VERB
使擔憂;使不安
If something exercises you or your mind, you think or talk about it a great deal, especially because you are worried or concerned about it.
例句
This has been a major problem exercising the minds of scientists around the world...
這一直是困擾全世界科學家的一個重要問題。
The proper role of appeal judges is an issue that has long exercised the finest legal minds.
上訴法官應當扮演何種角色，這一問題長期以來困擾著那些最出色的法律人士。