为了克服这一点，你只需某段时间内对着一个人讲话。

To overcome this, you just need to speak to one person at a time.

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开始的时候，确立一个想要在某段时间内完成的目标。

Start by setting a goal that you want to accomplish within a certain time frame.

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如果在某段时间内资源未使用，折扣和使用都会过期。

Discounts and usage often expire if the resources are not consumed within a certain amount of time.

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Now we're going to compare high glycemic index foods with low glycemic index foods, and so the curve of blood sugar with high glycemic index foods, those that create an exaggerated blood sugar response over a period of time might look like this.

现在我们要对高血糖指数的食物和,低血糖指数的食物进行对比,那些高血糖指数食物所形成的曲线,那些会在某段时间内产生过高血糖的食物,所形成的曲线看起来可能就是这样的

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选