However , certain semantic constraints can be expressed as syntactic ones 然而,某些语义约束可以表达为语法约束。
Occurs when stored data fails to satisfy certain syntactic or semantic constraints 在已存储的数据不能满足某些句法或语义约束时发生。
Semantic constraints on the nouns in chinese quot; adverbs of degree noun quot; constructions 句法手段对名词性并列结构中语义量级的强制
Your document rules primarily concern nesting of elements , not semantic constraints on contents as in prose markup 您的文档规则主要考虑元素的嵌套而不是内容的语义约束(如同使用散文标记) 。
No syntactic constraints are imposed on the ways in which expressions can be composed though the language does have some semantic constraints 虽然语言具有语义约束,但对于表达式的构造方式却没有施加语义约束。