抽认卡 - 学习,记忆和提高词汇量
Andev
抽認卡製造商
alpaca
單字卡 FlashCard
mu.co
Repetico - Study flashcards
Repetico GmbH
AnkiDroid 單字卡
AnkiDroid Open Source Team
Flashcards app - Learning Aid
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Buffl: Learn with flashcards
Brain Factory GmbH