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| ADJ |
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| /ˈæktɪv/ |
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| 1 | someone who is active does a lot of different activities and has a lot of energy and interests 积极的；活跃的 |
| People are remaining active into later life. 人们到了晚年仍很活跃。 |
| | 1a | very involved in the work of an organization or with a particular activity 积极的；热心的 | | active member He is an active member of the American Cancer Society. 他是美国癌症协会的积极分子。 | | +in She continues to be active in politics. 她依旧活跃于政坛。 | |
| | 1b | used about someone’ s mind （头脑）活跃的 | | meditation techniques to keep the mind active and alert 保持头脑活跃和警惕的沉思技巧 | |
| | 1c | used about activities and periods of time （活动和时间段）剧烈的，充实的 | | We had a very active weekend. 我们过了个非常充实的周末。 | |
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| 2 | doing things to make something happen , rather than just hoping that it will happen 在进行中的；在起作用的；切实的 |
| There are already active discussions going on. 讨论已经在进行了。 |
| Active steps are being taken to calm the situation. 已经采取了切实的行动以平息局势。 |
| | 2a | used for emphasizing that something is practical or enthusiastic （用于强调）切实的，热情的 | | active involvement/participation/support 切实的介入/积极的参与/热心的支持 | |
| | 2b | used for emphasis generally （用于笼统地强调） | | She had taken an active dislike to the work. 她对工作持一种极为厌烦的态度。 | |
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| 3 | operating or working in a particular area or at a particular time （在某一地区或某一时间内）活动中的 |
| Pickpockets are known to be active in the area. 该地区以小偷活动猖獗而著称。 |
| | 3a | doing a particular activity 正在进行（某项活动）的 | | sexually active (=having sex) sexually active young women 正在性交的 | |
| | 3b | an active electrical system is working （电路系统）在运转中的 | | The burglar alarm becomes active ten seconds after you set it. 防盗警报在设置后10秒钟启动。 | |
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| 4 | an active volcano is likely to erupt (= explode and pour out fire) at any time . When a volcano no longer does this it is extinct . （火山）活的 |
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| 5 | science producing a chemical or biological reaction 活性的 |
| Surfactants are the active ingredient in detergents. 表面活性剂是洗涤剂中的活性成分。 |
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| 6 | linguistics an active verb or sentence has the person or thing doing the action as the subject . ‘You hurt me’ is an active sentence . 主动语态的 |
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