VOA慢速英语:Obama Joins Head Injury Debate

短语讲解：

1. There’s a lot of concern but there’s a lot of uncertainty.

a lot of 许多的; 诸多
例句：A lot of what's changing now is subtle.
许多变化都非常微妙。

2.  Every season you’ve got boys and girls who are getting concussions in lacrosse and soccer and wrestling and ice hockey as well as football.

as well as 也，又
例句：Boys as well as girls are taught cookery in school these days. 
现在学校里男女学生都学烹饪。 

3. The one thing we can agree on is that sports are vital to this country.

agree on 对某事[物]有同样看法， 商定[同意]某事
例句：They agree on these terms. 
他们一致同意这些条款。 

4. And it’s a responsibility for us to make sure that young, talented kids like Tori and able to participate as safely as possible.

make sure 把事情弄清楚
例句：Make sure you are firm1y strapped in before the plane takes off. 
飞机起飞前务必系好安全带。