The importance of this field of activity was keenly appreciated by the leaders in the Continental Congress.

这一活动领域的重要性得到了大陆会议领导人的敏锐认识。

Frameworks change their form, yet the form that they had still remains. The inner energy of which we have spoken constantly renews itself, and recharges itself as it passes from one field of activity to another.

架构改变其形态，但它们原有的形态仍然存在。我们所说的内在能量不断地更新自己，并在从一个活动场域转移到另一个场域时给自己充电。

Bred up from boyhood in the Custom-House, it was his proper field of activity; and the many intricacies of business, so harassing to the interloper, presented themselves before him with the regularity of a perfectly comprehended system.

从小在海关长大， 这是他的活动领域。许多错综复杂的事务，让闯入者如此烦恼， 却以一种完全理解的系统的规律性呈现在他面前。