托布-迪克斯说，要注意并不是所有的全谷食品纤维含量都高，即每份有5克或更多的纤维。

Note that not all whole grains are high in fiber, meaning 5 or more grams of fiber per serving, says Taub-Dix.

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与刘亦婷相比，谷和高的情况也不大相同。刘亦婷起初是成都的一个普通女孩儿，后来获得了哈佛大学的全额奖学金。

Gu and Gao are also not from the mold that made Liu Yiting, the little-girl-that - could from an interior city (Chengdu) who made it into Harvard on a full scholarship.

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过不了多久，上海的霍华德•谷和朱利叶斯•高也会加入这一群体。

Joining soon, so they hope, are Howard Gu and Julius Gao of Shanghai.

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So, for example, we have this average level, and then it can go high where we have the peak, or it can go very low. We can also discuss sound waves, so again it's just the periodic variation of some property -- in this case we're talking about density, so we have high density areas and low density areas.

例如这是平均位置，在峰的位置水位高，在谷水位低，我们也可以,讨论声波它也是某种,量的周期变化，在这里我们,讨论的是密度,我们有高密度区和低密度区。

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