⏪ 新概念英语 - [4-042] - (97版) ⏩ ⏳ 正在检测本地文件... First listen and then answer the following question.先听录音，然后回答后面的问题。What does a pen have to do to record on paper the vibrations generated by an earthquake? 笔必须做什么才能在地震产生的振动纸上记录？Recording an earthquake 📁 请先导入本地文件， 需要帮助？点击我 ↗