The review hurled a monkey wrench into the structure.

审查将活动扳手扔进了结构。

These activities are the fabric of the friendship. It is a doing relationship in which similarity in interests is the key bond.

这些活动是友谊的结构。这是一种处关系，其中兴趣相近是关键的纽带。

So, in addition to considering the external conditions, or the structure of flow activities, we need also to take into account the internal conditions that make flow possible.

因此，除了考虑外部条件或流动活动的结构，我们还需要考虑使流动成的内部条件。

While such events may happen spontaneously, it is much more likely that flow will result either from a structured activity or from an individual's ability to make flow occur, or both.

虽然这样的件会自发发生，但更有的是， 心流会由有结构的活动或个人促使心流发生的力，或者两者兼而有之而产生。