Helper objects, on the other hand, are always contained within some item, and all references to helpers are containment references.
另一方面，Helper对象始终包含在某个项中，并且对Helper的所有引用都是包含引用。
Helper objects, on the other hand, are always contained within some item, and all references to helpers are containment references.
另一方面，Helper对象始终包含在某个项中，并且对Helper的所有引用都是包含引用。
应用推荐