1. I always keep my keys on a key fob to easily access them.
我总是把钥匙挂在钥匙扣上，方便拿取。

2. The security guard asked to see my fob before letting me into the building.
保安要求我出示钥匙扣才让我进入大楼。

3. I need to replace the battery in my fob because it's not working properly.
我需要更换钥匙扣的电池，因为它不能正常工作。

4. The conference attendees were given fobs to access different areas of the venue.
会议参与者被提供了钥匙扣，以便进入会场的不同区域。

5. My fob has a built-in alarm that goes off if I press the button.
我的钥匙扣有一个内置的警报器，按下按钮就会响起。

6. I always attach my fob to my purse so I don't lose it.
我总是把钥匙扣挂在钱包上，以免丢失。