1. The old computer is no longer usable.
那台旧电脑不再可用。

2. Make sure to check if the software is compatible and usable on your device.
请确保检查软件是否兼容并可在您的设备上使用。

3. The information provided was not very usable, so I had to look elsewhere.
提供的信息并不是很有用，所以我不得不另寻他处。

4. The new app is user-friendly and highly usable.
这款新应用程序用户友好且非常易用。

5. The furniture in the room was old but still usable.
房间里的家具很旧，但仍然可以使用。

6. The instructions were clear and made the product easily usable.
说明清晰，使产品易于使用。