The new cities and towns, squeezed by their walls, had to know and order time in order to organize collective activity and ration space.

在新的城市和小镇，由于其空间的限制，那里的居民必须要知道确切的时间且安排好时间，以组织集体活动和分配空间。

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Reading is a private, not a collective activity.

阅读是一种私人活动而非群体活动。

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By collective activity, they find friendship and warmth.

通过集体活动，人们得到友谊和温暖。

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Moreover, unlike art, science is a collective activity that demands collaboration.

ECONOMIST: History of science

In the decision Thursday, Second Circuit Judge Jose Cabranes held that the union representing the City College of New York could not force David Seidemann to pay dues for "ideological" activity not related to the union's core job of collective bargaining.

FORBES: Magazine Article

Passed in part to protect collective-bargaining rights, the law grants employees a right to engage in "protected concerted activity, " such as discussing pay or other conditions.

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