【英语时差8,16】甜菜汁有益大脑（上）

 Is there any way to prevent or cure dementia? Unfortunately, no: there’s no cure for dementia. And there’s no sure fire way to prevent it, either. But scientists suspect that some types of foods may help the brain stay healthy longer. Right.For example, a study looked at the brain health properties of beet¹ juice. Scientists have known that beet juice helps lower blood pressure. That’s because it’s high in nitrates chemicals that help open blood vessels² and increase blood flow throughout the body. The study looked specifically at how drinking beet juice may also increase blood flow to the brain. Researchers studied the brains of fourteen older adults, all age 70 or older, who alternated³ between trying diets with and without beet juice.

1 beet   

n.甜菜；甜菜根

参考例句：

• He farmed his pickers to work in the beet fields. 他出租他的摘棉工去甜菜地里干活。
• The sugar beet is an entirely different kind of plant.糖用甜菜是一种完全不同的作物。

2 vessels   

n.血管( vessel的名词复数 )；船；容器；（具有特殊品质或接受特殊品质的）人

参考例句：

• The river is navigable by vessels of up to 90 tons. 90 吨以下的船只可以从这条河通过。 来自《简明英汉词典》
• All modern vessels of any size are fitted with radar installations. 所有现代化船只都有雷达装置。 来自《现代汉英综合大词典》

3 alternated   

v.交替( alternate的过去式和过去分词 )；（使）交替， （使）轮换

参考例句：

• He alternated between hope and despair. 他时而充满希望，时而绝望。 来自《简明英汉词典》
• The young man alternated singing and dancing. 那年轻人一会儿唱，一会儿跳。 来自《简明英汉词典》