It is important for some classes to have exactly one instance.
重要的是，一些班级有精确的一个实例。
Therefore, our helper classes wait some time for the directory queries to complete.
因此，帮助器类会等待一段时间以完成目录查询。
My reason for cutting some classes could be accepted.
我翘课的原因是可以接受的。
My reason for cutting some classes could be accepted.
我翘课的原因是可以接受的。
应用推荐