These technologies can detect some simple loop invariants, but can not deal with complex issues.

这些技术能探测出较简单问题的循环不变式，但是却无法处理复杂问题。

youdao

There are also loop invariants and a few others, but pre - and post-conditions and class invariants are really the basic fabric of contracts.

还有循环不变式等等，但前置、后置条件和类不变式是基本要素。

youdao

There are also loop invariants and a few others, but pre contract element condit- and post-conditions and class invariants are really the basic fabric of contracts.

还有循环契约要素条件不变式等等，但前置、后置条件和类不变式是基本要素。

youdao