There's a lot of science that shows it's important to have kids play, to have unstructured playtime, and that every moment doesn't have to be spent in productive activity.
大量的科学研究表明，游戏对孩子是非常重要的，让他们拥有自由的游戏时间，并不要求每一分钟都花在高效率的活动上。
Problem solving is not only a productive activity process, but also an advanced learning process.
问题解决既是一项创造性的实践活动，又是一个高级的学习过程。
And it is the organic combination of the agriculture productive activity and tourism, and it is also becoming a new economic growth point.
生态旅游农业是农业生产活动与旅游活动的有机结合，它已日益成为一个新的经济增长点。
The best way to stay in the 'sweet spot,' Dr. Moser says, is to channel the anxiety into productive activity — like studying and acing the test.
莫泽认为，要掌握好平衡点，最好的方式是将焦虑引导到富有成效的行动中去，比如说去学习并通过测试。
There ensued a partial restoration of productive activity.
接着，生产活动得到了部分恢复。
It places human productive activity at forefront.
它把人类的生产活动放到首位。
As for its behavior, education is a special social productive activity, which produces special educational products.
教育就其行为来讲是一种特殊的社会生产活动，生产着特殊的教育产品。
In productive activity and scientific analysis, some common simple primary functions are used to fit empirical equation.
在生产活动和科学技术分析中，需要一些常用的简单初等函数来拟合经验公式。
In productive activity and scientific analysis, some common simple primary functions are used to fit empirical equation.
在生产活动和科学技术分析中，需要一些常用的简单初等函数来拟合经验公式。
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