它们包括对话、同步和异步的音效以及音乐。
They include dialogue, synchronous and asynchronous sound effects, and music.
对话流程满足的社会需求之一是人类对“同步”的需求——即保持“同步性”或相互协调性。
One of the social needs addressed by conversational flow is the human need for "synchrony"—to be "in sync" or in harmony with one another.
如果这两个工具是“同步”的话，那么对话框将如图26所示，并且将会有信息指示元素处于最新状态。
If the two tools are "in sync," the dialog box will look like Figure 26, and the message will indicate that the element is up-to-date.
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