The cello is more in demand in university orchestras.大学管弦乐团更需要大提琴手

in demand非常需要的； 受欢迎的

Soft drinks are much in demand this hot weather.

这么热的天气，软饮料需求量很大。

Good secretaries are always in demand.

好的秘书总是很多人都需要的。

Come on,this covers up more than my bathing suit.这个还没泳衣暴露

cover up掩盖； 掩饰； 盖住； 裹住

The lens hood is used to cover up the lens.

遮光罩是用来遮盖镜头的。

I tried to cover up for him but without success.

我设法替他掩饰，但没成功。

Is picking you up from school.驾车教练会去学校接你

pick up接人

The next morning, my mum came to pick me up.

第二天早上,我的妈妈来接我。

The driver stopped to pick up a hitchhiker.

司机停下来让一个搭车人上了车。