un·vi·a·ble
adjective/ˌʌnˈvaɪəbl/
/ˌʌnˈvaɪəbl/
- that cannot be done; that is not capable of working successfully
不可行的：无法做到的；无法正常工作 - The airport had become financially unviable and closed in December 2019.
机场在财政上已难以为继，于 2019 年 12 月关闭。
- The airport had become financially unviable and closed in December 2019.