unlock

动词 unlock:

1. open the lock of
2. set free or release
3. become unlocked

1. I saw him enter the room, unlock a drawer, take out a document, photograph it and put it back.
   我看见他进了房间，打开抽屉的锁，取出文件，照了相，然后又把它放回去。
2. She fail to unlock the safe in spite of all her exertion.
   她虽然费尽力气，仍未能将那保险箱的锁打开。
3. Scientists have unlocked the secret of the atom.
   科学家已经揭开了原子的秘密。
4. I unlocked the door and went into the room.
   我打开房门，然后走进屋里。