Defining a subset of constraints to group them by use cases (the user is valid and has provided enough information to buy in one click).

定义约束的一个子集，以根据用例对其分组(用户是有效的，而且用户在一次点击中提供了足够的信息)。

youdao

Defining a subset of constraints to group them by use cases (the user is valid and has provided enough information to buy in one click).

定义约束的一个子集，以根据用例对其分组(用户是有效的，而且用户在一次点击中提供了足够的信息)。

youdao