留日期 Stay date
单身者留意日 Singles Awareness Day
留日学生 students studying in Japan ; chinese students in japan ; Chinese students studying in Japan ; returned students from Japan
去日留痕 the remains of the day ; Emma Thompson ; Left Luggage
日本留学考试 EJU ; Examination for Japanese University Admission for International Students ; Examination for Japanese University ; Examination for Japanese University Admission
No（缺省值）— 表示不保留日志。
Recovery—表示保留日志，且可以用于前滚恢复。
Recovery - to indicate that the logs are retained, and can be used for forward recovery.
如果取消选择这两个参数，就不能对数据库进行前滚恢复，因为将不再保留日志。
If both of these parameters are de-selected, roll-forward recovery becomes unavailable for the database because logs will no longer be retained.
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