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

Its sales and profits start at a low level, rise (it is hoped) to a high level and then decline again to a low level.

一开始，产品的销量和利润都不高，之后会上升到一个较高的水平(希望能这样)，然后又会逐渐下降。

youdao

An overly simplified description, but the result is a new intermediate form better suited for high - and low-level optimizations.

这是一个过度简化的描述，但是其结果是一种新的中间形式，这种形式更适合于高级和低级优化。

youdao

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

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

ECONOMIST: Nuclear waste

The high-level waste would then be enclosed in glass canisters and buried deep underground while the low-level waste was stored above ground in special secure facilities.

ECONOMIST: Nuclear waste