The first one asserts that the calculator instance object is not null, i.e. it exists.

第一个宣称这个计数器实例对象不是空，就像它实际存在一样。

youdao

Because either the source or the target must be the generic business object and only one managed role exists per relationship, the managed role name is not needed.

因为源或目标必须为通用业务对象，而且每个关系中只存在一个托管角色，因此不需要托管角色名称。

youdao

Objects that you delete in the child Workspace are only flagged in that Workspace as not being available (that is, deleted); however, the object still exists in its parent Workspace.

您在子工作区中所删除的对象，只能在不能得到的该工作区中(就是说，删除了)标记；但是，对象仍然存在于它的上级工作区中。

youdao

The vulnerability exists when MSXML attempts to access an object in memory that has not been initialized, which may corrupt memory in such a way that an attacker could execute arbitrary code in the context of the logged-on user.

FORBES: Connect