1. Metalinguistics is a branch of linguistics that studies language itself as a system of signs and rules.
元语言学是语言学的一个分支，研究语言本身作为符号系统和规则的特征。
2. In metalinguistics, we analyze the structure and function of language, as well as the ways in which it is used and understood.
在元语言学中，我们分析语言的结构和功能，以及它的使用和理解方式。