When the water level was high, the user needed only to descend a few steps to reach it; when it was low, several levels would have to be negotiated.

当水位高的时候，使用者只需要往下走几个台阶就能到达井的部位；当水位低的时候，就要走好几层了。

youdao

Dependency Inversion Principle states that we should decouple high level modules from low level modules, introducing an abstraction layer between the high level classes and low level classes.

依赖倒置原则声明了我们应该将高层模块和低层模块解偶，在高层类和低层类之间引入一个抽象层。

youdao

High level modules should not depend upon low level modules. Rather, both should depend upon abstractions.

高层模块不应该依赖底层模块，两者都应该依赖其抽象。

youdao

The first one is, whether this is a high-level or low-level language.

第一个是，不管这是一个高级或者是低级的语言。

麻省理工公开课 - 计算机科学及编程导论课程节选

At present, the plan is for it to be reprocessed using solvents and chemical processes to separate it into high-level and low-level components.

ECONOMIST: Nuclear waste

It is described by the United States Air Force as the modern backbone of America's long-range bomber force, built for low-level, high-speed missions.

BBC: Profile: B-1 bomber

Chemical reprocessing at Hanford would generate 22, 000 tonnes of high-level waste and 500, 000 tonnes of low-level waste.

ECONOMIST: Nuclear waste