仅需使用开源技术提供的备份工具(opensolaris和MySQL)，就可以备份任何基于这些技术的内容。
With everything built on open source technology, it's just a matter of using the various backup facilities offered by these technologies (OpenSolaris and MySQL).
一项新的研究表明，孩子们听了，他们把信息储存起来以备后需。
Toddlers listen, they just store the information for later use, a new study finds.
外国人需随身携带护照和居留证以备查验。
Aliens must have their passports and residence permits with them for inspection.
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