不幸的是，它不允许bucket级别的操作(创建bucket和删除bucket等)或元数据操作(尤其是在新的密匙上设置内容类型)。
Unfortunately, it does not allow bucket-level operations (create bucket, delete bucket, etc.) or metadata operations (especially setting the content type on a new key).
在各层操作的执行过程中，通常高级别的层次只得等待低级别层次的结果。
During the execution of operations in each layer, usually the higher layers have to wait for a result from lower layers.
当然，在您开始实际使用并操作树时，您可能会发现这些类别的其他许多有趣的组合和扩展。
Of course, you may find many other curious combinations and extensions of these categories as you begin to use and manipulate trees in practice.
应用推荐