VOA慢速英语:专家研究大脑损伤与美式足球之间的联系

n. 碰撞; 冲突; （意见，看法） 的抵触; （政党等的） 倾轧;
[例句]They were on their way to the Shropshire Union Canal when their van was involved in a collision with a car
在去往什罗普郡联盟运河的路上，他们的小货车与一辆小车相撞。

2.donate

vt. （尤指向慈善机构） 捐赠; 献（血）; 捐（血）; 捐献（器官）;
n. 捐赠; 捐献;
[例句]He frequently donates large sums to charity
他常常向慈善机构捐赠大笔钱款。

3.dementia

n. [医] 痴呆;
[例句]She is suffering from senile dementia.
她患有老年痴呆症。

4.startling

adj. 令人吃惊的;
v. “startle”的现在分词;
[例句]His hair was dyed a startling black.
他把头发染成了令人吃惊的黑色。

5.helmet

n. 头盔; 钢盔; 盔形物，盔状物; [植] 盔状花冠;
vt. 给…戴上头盔;
[例句]He donned work clothes and a wicker helmet.
他穿上工作服，戴上柳条帽。

6.diagnose

vt. 诊断; 判断;
vi. 做出诊断;
[例句]The soldiers were diagnosed as having flu
这些士兵经诊断患了流感。