While it's possible to specify a major and minor number as arguments for compatibility purposes, this is no longer required.

虽然为了兼容性目的指定主设备号和副号码作为参数是可能的，但不再需要这样了。

youdao

So under most circumstances, it is safe to load a library with the same major number and a higher minor number; consider it an unsafe practice to load a library with a higher major number.

这样，在大部分情形下，加载具有相同主版本号和更高次要版本号的程序库是安全的；而加载主版本号更高的程序是不安全的行为。

youdao

Suppose Key represented a version number, with a major and a minor number.

假设Key代表一个版本号，有两个域：major和minor。

youdao