lock application memory

例句：

1. 1. Please don't leave your keys on the table;you need to lock them.
   请不要把你的钥匙留在桌子上，你需要把它们锁起来。
2. 2. Thedoor was locked from the inside.
   门从里面锁上了。
3. 3. She locked the door andwent out for a walk.
   她锁上门出去了。