核心词
先理解核心含义，再看它在真实句子里的用法。
核心词
a word that is essential or central
The dictionary lists core words for learners.
词典列出了学习者的核心词。
核心词
a word that is essential or central
Use core word naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
Dictionary facts from AI_SUPPLEMENT.