At that time, the transaction is rolled back until the last asynchronous point.
此时，事务回滚到前一个异步点。
In a write transaction, all changes must either all commit or all roll back.
在写事务中，所有的变更必须全部提交或者全部回滚。
The transaction is rolled back in that case.
在那种情况下，事务进行了回滚。
More important, when should the transaction roll back the work?
更重要的是，事务应何时回滚工作？
Either commit or roll back your transaction before resubmitting the request.
在重新提交请求之前要提交或回滚事务。
Only the transaction owner can roll back the transaction.
只有事务所有者才能回滚事务。
If the client's transaction eventually rolls back, then the event will not be emitted.
如果客户端的事务最后回滚了，那么事件将不会被发送。
The updated data is sent back to the server to complete the transaction.
更新后的数据被发送回服务器以完成事务。
Otherwise, when we close the connection, the transaction will be rolled back on our behalf.
否则，当关闭连接时，事务将会被回滚。
Return whether this transaction is completed, that is, has already been committed or rolled back.
判断这个事务是否完成，也就是已经提交或者回滚。
Return whether this transaction is completed, that is, has already been committed or rolled back.
判断这个事务是否完成，也就是已经提交或者回滚。
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