As I covered in the last column, signatures are an item added to the class file format by generics; only references to generic types have signatures.

正如我在前一期中介绍的，签名是泛型添加到类文件格式中的项目；只有对泛型的引用才有签名。

youdao

Fields that aren't generic references are fully defined at the time the generic template is defined; fields that are generic references are just kept as signatures to be filled in later.

不是泛型引用的字段都在泛型模型定义的时候完全定义；是泛型引用的字段则保留作为签名，留在以后进行填充。

youdao

Unfortunately, the complexity of generic types (including all the possible variations of bounds and such) means that signatures cannot be described as simply as the descriptors.

不幸的是，泛型的复杂性(包括可能出现的各种上下界变化等)意味着签名无法像描述符那样简单地说明。

youdao