启封

例句：

1. 1. Please open the door for me, please.
   请为我开门。
2. 2. The box was sealed with a padlock, so we had to unseal it.
   这个箱子被一把大锁锁着，所以我们不得不把它打开。
3. 3.He unlocked the safe and took out the documents.
   他打开了保险箱，取出了文件。