找不到应该发哪个版块了，先发在这里了。

entrainment在河流泥沙动力学中有“卷吸”的含义。
在社会学中的含义可以根据下面这段话理解：
http://knowledge.sagepub.com/view/processes/n242.xml

Social Entrainment
Janice R. Kelly
The social entrainment model was introduced by Joseph McGrath and Janice Kelly to provide a general framework for understanding some aspects of social behavior over time. The term entrainment is borrowed from the biological sciences, in which an internal rhythmic process is “captured” and modified by another cycle. For instance, we know that there are a number of cyclic processes within the body, such as body temperature, urinary output, and various hormonal cycles, that have become entrained to one another so that they operate in synchrony with respect to their regularly spaced recurrence. These cycles can also be affected by various outside forces that might affect their onset, offset, or synchronization. For instance, the daynight cycle acts as a powerful entraining signal for synchronizing many of the body's cyclic processes. In “free-running” conditions, or in conditions in which the outside pacing influence of the day night cycle is removed, these ...