知识小卡片用英语怎么说

知识小卡片在英语中通常称为 "flashcard"。该词源于双语学习技术，由一张小卡片上所写的单词或概念提供给学习者。例如：
English: "flashcard"
Chinese: "知识小卡片"
English: "I use flashcards to study new vocabulary words."
Chinese: "我用知识小卡片来学习新的词汇。"
English: "Flashcards are a helpful tool for memorizing facts and information."
Chinese: "知识小卡片是记忆事实和信息的有用工具。"