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1·Learning has got to be active and experiential.

学习得是主动且来自经验的。《柯林斯英汉双解大词典》

2·If you want to be active when you are on vacation, then try an active vacation.

如果你想在度假时活跃起来，那就尝试一个活跃的假期。

3·Animals tend to be active or inactive depending on the position of the sun or moon.

动物是否活跃取决于太阳或月亮的方位。

4·From the small number of impact craters that appear on Martian lava flows, one can estimate that the planet was volcanically active as recently as a half-billion years ago—and may be active today.

从火星熔岩流上出现的少量陨石坑中，我们可以估计，在5亿年前，这个星球上的火山还很活跃——也许现在依然活跃。

5·Be active to start a conversation.

积极主动地开始一段对话。

6·Mr.Smith always encourages his students to be active in class．

史密斯先生总是鼓励学生在课堂上要活跃。

7·It also gives us energy, so we can be active all day.

它也赋予我们能量，我们因此可以整日活跃。

8·If reading is to learn anything more than passing time, it must be active.

如果读书是为了学到点什么，而非仅仅为消磨时间，那它必须是主动的。

9·Next, when having a class, be active to think about what the teacher says and express yourself.

其次，上课的时候，积极思考老师说的话并表达自己的想法。

10·The second secret to living a happy life is to be active.

幸福生活的第二个秘诀就是要积极主动。