并且确定把备份件放在安全位置。

Also make sure you store your backups in a safe place.

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如果所指定的任一条件为真，则执行备份操作。

A backup is performed if any of the criteria specified are true.

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要求书面的备份，并保存一份信件和回复的复印件。

Ask for repairs in writing and keep a copy of the letter and response.

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要求书面的备份，并保存一份信件和回复的复印件。

Ask for repairs in writing and keep a copy of the letter and response.

youdao