In fact, they are prescribed and they're given at a certain level, a dosage that is understood by a practitioner who's been trained.

实际上，这类补药属于处方药，须由经过训练的职业医师规定剂量。

youdao

And, at any point in the lifecycle the model is expressed at a certain level of abstraction.

而且，在生命周期的任何位置，模型都是以特定的抽象级别加以表述的。

youdao

At a certain level of wealth, the heavens themselves and the star-filled night are nature's riches.

在有了些财产的人眼中，就连天穹和嵌满繁星的夜晚也都是大自然的财宝；

youdao

It cannot be priced at a level where only certain people have access, because then you are cutting entire sections of our country out of involvement in the world,"

VOA: standard.2010.01.05

And so if one is looking to keep protein at a certain level, then these sort of foods would get favored.

但还不是全部 而如果要使体内蛋白维持在某种水平上,那这些食物会比较受青睐

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Rather, they're located-- they're related at a pinpoint level to certain parts of your brain.

相反,它们定位于,它们都精确地定位于大脑的某个部位

耶鲁公开课 - 心理学导论课程节选

So, at a certain level, you got to feel for, like, you know what?

NPR: Really Important Football Game Coming

Be that as it may, at a certain level I really have it in for these guys.

WSJ: Joe Queenan on the Sound of One Neighbor Misbehaving | Moving Targets

At a certain level men and women in business, too, of course have to look each other in the eye.

NEWYORKER: Outage