translation.en: So in the course of your VC pitch -- you have a very few minutes; most VC pitches, angel pitches, are about 15 minutes, most should be less than half an hour -- people's attention span, after 18 minutes, begins to drop off.
translation.zh: 在你集资演讲的过程中，你只有很短的几分钟。 大多数投资演讲的时间 -- 对创投天使大概是15分钟 对其它大概不到30分钟。 人的注意力大概会集中18分钟， 然后集中力就开始下降了。