Lexis is all the words in a language — the word-stock, not the grammar. In a classroom it often covers single words and the ready-made phrases that travel with them.

Lexislexis is all the words in a language是一個語言裡所有的詞—— the word-stock也就是詞彙庫， not the grammar而不是文法。In a classroom在課堂上 it often covers它通常包含 single words單一的字 and the ready-made phrases that travel with them還有跟著這些字一起出現的固定片語。

Teachers like it because vocabulary can sound like a list of items to memorise, while lexis suggests the living set of words a language actually uses.

Teachers like it老師喜歡用這個詞 because vocabulary can sound like a list of items to memorise因為vocabulary聽起來像一堆要背的東西， while lexis suggests而lexis給人的感覺是 the living set of words a language actually uses一個語言實際在使用的、活生生的一套詞。

It is a linguistics and ELT word, not a street word. It sits next to lexicon: a lexicon may be a dictionary, or the words in one person’s head; lexis is usually the words of the language as a whole.

It is這是個 a linguistics and ELT word語言學和英語教學的用詞， not a street word不是路上大家隨口會說的話。It sits next to lexicon它跟lexicon很接近： a lexicon may be a dictionarylexicon可以指字典， or the words in one person's head或是一個人腦中的詞彙； lexis is usually the words of the language as a wholelexis通常是指整個語言的詞彙。

The matching adjective is lexical. You do not pluralise it in ordinary academic use (you do not say “many lexises”); you talk about the lexis of English, or a learner’s lexis.

The matching adjective對應的形容詞 is lexical是lexical。You do not pluralise it in ordinary academic use在一般學術用法裡不會把它變複數 (you do not say "many lexises"不會說「many lexises」)； you talk about the lexis of English你會說the lexis of English（英文的詞彙）， or a learner's lexis或a learner's lexis（學習者的詞彙）。