flashboard check gate

例句：

1. 1. The teacher used a flashcard check gate to help students memorize the definitions of new words.
   老师使用闪卡检查门帮助学生记忆新单词的定义。
2. 2. The student used a flashcardcheck gate to review the material before theexam.
   学生使用闪卡检查门在考试前复习材料。
3. 3. The engineer used a flashcard check gate to troubleshoot the issuewith the circuitry.
   工程师使用闪卡检查门来诊断电路的问题。