A metalanguage is language used to talk about language. When a teacher says “this word is a noun” or “this sentence is in the past,” those labels are metalanguage. Dictionaries and grammar books are full of it.

A metalanguage一個metalanguage is language used to talk about language是用來談論語言本身的語言。 When a teacher says當老師說 "this word is a noun"「這個字是名詞」 or "this sentence is in the past,"或「這句話是過去式」時, those labels are metalanguage那些標籤就是metalanguage。 Dictionaries and grammar books字典和文法書 are full of it裡面滿滿都是它。

Though actually, you already use a little of it without the fancy name: asking “What does that word mean?” is using language to talk about language.

Though actually不過事實上, you already use a little of it你早就在用一點點了 without the fancy name只是沒用這個花俏的名稱: asking問 "What does that word mean?"「那個字是什麼意思？」 is using language to talk about language就是在用語言談論語言。

In logic and computer science, metalanguage can also mean a language that describes another language — for example, English used to explain a programming language. It is a specialist word (linguistics, philosophy, teacher training). Ordinary people just say “grammar words” or “words about words.” It has nothing to do with metals.

In logic and computer science在邏輯學和電腦科學裡, metalanguage can also meanmetalanguage也可以指 a language that describes another language一個用來描述另一種語言的語言 — for example舉例來說, English used to explain a programming language用英文來解釋一種程式語言。 It is a specialist word這是一個專業用字 (linguistics語言學, philosophy哲學, teacher training教師培訓等領域)。 Ordinary people一般人 just say "grammar words"就直接說「grammar words」 or "words about words."或「words about words」。 It has nothing to do with metals它跟金屬一點關係都沒有。