Smarter forms round in multiple choice: the options now differ in exactly one form (article, plural, verb form), so you can't guess by spotting the word's stem. A wrong pick explains the rule, in English and Chinese. Brand-new words get gentler options, words you know well get harder ones. Hide words: take a word out of your reviews when you already know it well. You can bring it back any time from "Hidden" on the Study tab. More actions in multiple choice: label a word, save it to your Flashcards, or hide it, just like in flashcard mode. Redesigned Study screen: a cleaner layout that fills the screen on every iPhone, from the smallest to the Pro Max. Dictation accepts "ss" for "ß". Safer data: content updates no longer remove words restored from a backup or idioms you study, and restoring a backup can no longer leave half-written settings behind. 更聪明的词形选择题： 选项之间只相差一个词形（冠词、复数或动词变位），不能再靠识别词干来猜答案。选错时会用中英文解释规则。新词的选项更简单，熟悉的词选项更难。 隐藏单词： 已经掌握的单词可以从复习中移除，随时可以在“学习”页的“已隐藏”里恢复。 选择题里的更多操作： 和单词卡模式一样，可以给单词加标签、加入闪卡或隐藏。 重新设计的学习页： 布局更简洁，在每一款 iPhone 上都能铺满屏幕。 听写时可以用 “ss” 代替 “ß”。 数据更安全： 内容更新不会再删除从备份恢复的单词或正在学习的习语；恢复备份时也不会再留下写了一半的设置。