insert mode

例句：

1. 1.The pen was inserted into the notebook.
   钢笔被插入到了笔记本里。
2. 2. She inserted a key into the lock to open the door.
   她把钥匙插入锁孔以打开门。
3. 3.The new feature was inserted into the software update.
   新功能被插入到软件更新中。