VOA常速英语:Midlife Blood Pressure Spike Ups Heart Attack Risk

短语讲解：

1. "People who develop hypertension during that time period actually have a higher lifetime risk for cardiovascular disease, as opposed to people who maintain a normal blood pressure during middle age," says Norrina Allen, of the Northwestern University School of Medicine in Chicago, who led the study.

as opposed to和…相反；与…相对比
例句：I am here on business as opposed to a holiday. 
我在这里是办公事而不是度假。

2. So if you have hypertension by the time that you're age 55, you have an increase in your lifetime risk of cardiovascular disease, a 30 percent increase, compared with people who maintain normal levels of blood pressure throughout middle age.

by the time到…时候为止
例句：He had left by the time we reached home.
当我们到家的时候他已经走了。
compare with与...相比
例句：I'm afraid my English compares poorly with hers.
恐怕我的英语同她的英语相比要差得多。

3. And people in the study whose blood pressure went down during middle age had a lower risk of cardiovascular disease.

go down沉下; 落下; 降低
例句：Prices began to go down.
物价开始下降。

4. It's important that early in life, starting around age 30 or 40, that we really focus on maintaining a healthy lifestyle, keeping our blood pressure within a normal range, and that will ultimately result in reducing our risk for cardiovascular disease down the road.

focus on对(某事或做某事)予以注意; 集中于
例句：Many firms are focusing on increasing their markets overseas.
许多商行都专注于扩大国外市场。
result in导致,结果是
例句：The game resulted in another victory for our team.
比赛结果, 我们队又获胜了。

5. She says future research will focus on people whose blood pressure starts off normal, then increases, but is brought back down with the help of medication.

start off以…开始
例句：What shall we start off this thing with?
我们该从哪儿开始谈这件事?
bring back使(某人)恢复(某状态)
例句：We must bring him back to health.
我们必须使他恢复健康。