VOA慢速英语:Average Weight of American Men Increased 7 Kilograms in 20 Years(翻译)

短语讲解：

1. That amount is based on information gathered between 2011 and 2014.

base on 使建立在…基础上
例句：Pls check and give us your best price base on below fabric qualities.
请查收并根据下面给出的纺织品质量给出相应的报价。

2. They took part in the National Health and Nutrition Examination Survey from 2011 to 2014.

take part in 参加…，参与…活动
例句：Are you going to take part in the first experiment?
你们会参与首次实验吗?

3. Rao said that people should not worry about each pound they lose, but should instead “think about adopting healthy behaviors that can last a lifetime.”

worry about 担忧， 烦恼; 惦念
例句：Don't worry about being late. It's fine.
别为迟到担心了 没有关系。