脏读：A 1检索a 2未提交的数据。

Dirty reads: A1 is retrieving uncommitted data of a2.

youdao

不过，让其事务看到未提交的数据可以带来意料之外的副作用，如更新冲突和读取不一致等。

Letting uncommitted data be seen by other transactions, however, can result in unexpected side effects, such as clashing updates and inconsistent reads.

youdao

未做任何修改地关闭数据库(将所有提交的数据写到磁盘)。

The database was cleanly shut down (All the committed data are written to disks).

youdao