These objections are similar to those voiced by practitioners thirty years ago, when they resisted using high-level programming languages because of performance concerns.
这些异议类似于三十年前实践者提出的那些，那时由于对性能的关心，抵制使用高级程序设计语言。
In choosing how to name my namespaces, I use conventions similar to those languages because they're familiar and understood by many developers.
在选择名称空间命名方式上，我使用的约定类似于这些语言的约定，因为许多开发人员都对此比较熟悉，便于他们理解。
It is often used in conjunction with other schema languages, including W3C XML schema and RELAX ng, because it can offer some facilities not available with those languages alone.
人们经常将它与其它模式语言(包括W3C XML Schema和RELAX NG)结合起来使用，因为它能自己提供那些语言所没有的某些功能。
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