In half an hour's whirl of activity she does it all.
在半个小时马不停蹄的忙碌中，她做完了这一切。
Teaching plan can make the activity of teaching get twice the result with half the effort.
好的教学设计可以使教学活动取得事半功倍的效果。
The other half includes the often large volume of non-exercise physical activity.
而另一半的时间又有绝大多数是非运动型的活动。
The other half includes the often large volume of non-exercise physical activity.
而另一半的时间又有绝大多数是非运动型的活动。
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