VOA慢速英语:Gut Bacteria: We Are What We Eat

短语讲解：

1. The human digestive system is full of bacteria -- mostly good bacteria.

full of充满
例句：The hall was full of people.
大厅里挤满了人。

2. These organisms help break down food so the body can use the nutrients.

break down分成若干部分；把(化合物等)分解；把(机器等)拆散，拆开(以便贮藏或运输)
例句：The newly published booklet breaks down into three parts.
这本新出版的小册子分成三部分。

3. Mr. Wu says the studies looked for connections between the food that people ate and the kind of microbes living in their intestines.

look for寻找
例句：Some birds are looking for food.
有些鸟在寻找食物。

4. So, we found essentially that there are two major categories in which individuals could be classified by the bacteria in their gut: one associated with sort of a western-type diet, and another one associated with a more agrarian or fruit-vegetable type of diet.

associate with与…交往, 联系
例句：Foreigners always associate China with the Great Wall.
外国人总是把中国和长城联系在一起。

5. In the second study, ten volunteers took part in a so-called controlled feeding experiment.

take part in参加…, 参与…活动
例句：John takes part in many school activities.
约翰参加很多学校里的活动。

6. This suggests that the mix of bacteria is based on long-term dietary patterns, not what people ate in recent days.

base on使建立在…基础上,立足
例句：Action should be based on solid facts.
行动应有确凿的事实为依据。

7. He says intestinal bacteria might even play a part in the development of disease.

play a part in与…有关,对…有影响
例句：Women play a significant part in the modern Olympic Games.
妇女在现代奥运会中发挥了重要的作用。

8. The research may add to understanding of how diet affects health.

add to增加, 加强
例句：This lesson adds to the value of the book.
这一课增加了这本书的价值。