子选项 meaning in English

sub option

Gets the number of child option collections this
包含的子选项集合的数量。
There are sub - options under the administration page
在administration页面下有一些子选项：
Switch for each file to distinguish between the two files
开关上使用alias子选项，以区分两个文件。
Option and all of its children
选项及其子选项。
Method is called on demand the first time a user asks for child options or properties of an options collection
用户第一次请求选项集合的子选项或属性时，将按需要调用