Works without a key (offline words). To let the AI explain any word, fill in the three fields below.
These actions ask for a Parent PIN so kids can't change them. AI settings above are also protected.
把「掌握满半年」的单词归档：移到云端历史区、单词本不再显示，家人仍可查看，星星不受影响。
Export saves all words and progress to a file. Clear deletes everything and cannot be undone.