这种疾病经常潜伏多年而不被察觉。

The disease often goes/ remains undetected for many years.

护士经常不得不对付粗暴的或喝醉酒的病人。

Nurses often have to contend with violent or drunken patients.

从前的夏天，我们经常泛舟湖上。

We used to go sailing on the lake in summer.

经常性锻炼对于身体健康有直接影响。

Regular exercise has a direct bearing on fitness and health.

人们经常谈到两者的相似之处。

The similarities between the two have often been remarked on.

我们在学生经常去的一家酒吧里相遇。

We met in a local bar much frequented by students.

经常检查并控制你的车速是至关重要的。

It is vital to keep a check on your speed.

有个零件松了经常卡住机器。

There's a loose part that keeps jamming the mechanism.

经常使用护发剂来使你的头发柔软而且易于梳理。

Use conditioner regularly to make your hair soft and manageable.

学生和当地居民都经常去那个俱乐部。

The club is patronized by students and locals alike.

我记得我们过去经常在周末去看望他们。

I remember we used to go and see them most weekends.

经常锻炼的好处不应低估。

The value of regular exercise should not be underestimated.

他们经常相互取笑。

They often make jokes at each other's expense.