保持听众对你的演讲的兴趣和注意力是关键。
Keeping your audience alert and interested is a key factor in your delivery.
这样的直接后果就是逐步失去兴趣和注意力，从而不能圆满完成任务。
The direct consequence can be a progressive lack of interest and focus to get the job done.
缺乏外部的兴趣焦点，注意力因此转向内部，引发需要解决的内部问题；尽管这些问题可能很模糊和不重要。
Lacking an external focus, the mind turns inward on itself and creates problems to solve, even if the problems are undefined or unimportant.
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