Oscitron
隧道二极管振荡器
🗣️ 情景例句
taking these remarkable pictures
来拍摄这些突出作品
All work and no play make Jack a dull boy.
尽量学，尽情玩。
For instance, if you are older you have less time to recover from any major losses,
比如说，如果你年纪较大，你从重大投资损失中恢复过来的时间就较少，