1.Cursor threshold option to specify the number of rows in the cursor set at which cursor keysets are generated asynchronously.
选项可以指定游标集中的行数，超过此行数，将异步生成游标键集。
2.The predefined kernel keysets described above should form the basis of the typical replace gate.
前面描述了预定义的内核键集，它们应该可以构成典型的替换门的基础。
3.These keysets provide read and write access to the data protected by their keys.
这些键集通过它们的键，提供了对保护数据的读写权限。
4.Cursor threshold to -1, all keysets are generated synchronously, which benefits small cursor sets.
设置为-1，则所有游标键集将同步生成，这对于小游标集很有用。