有趣的是，在XSL规范中，W3C没有包含一个可用来验证fo文档的正式认可的DTD(文档类型定义)。

It's interesting to note that in the XSL specification, the W3C didn't include an official DTD (document Type Definition) that you could use to validate an FO document.

youdao

在词法特征方面：汉语实物颜色词的构词类型全部为复合式，但只有偏正式一个结构类型，而英语实物颜色词以词根法为主要构词类型。

Morphology aspect: all the Chinese colour words from substance are compound words, but there is only one structural type, all the English colour words from substance are root words.

youdao

很容易模仿在正式的DD K种使用的结构声明的模式，所以我把这个设备扩展名声明称一个结构，伴随标签和类型以及类型指针名称。

I find it easiest to mimic the pattern of structure declaration used in the official DDK, so I declared this device extension as a structure with a tag as well as a type and pointer-to-type name.

youdao