unworkable
adj. 不能实行的；难运转的；不切实际的
例句
The law as it stands is unworkable.
照现在的情形，这条法律是难以执行的。
《牛津词典》
There is the strong possibility that such cooperation will prove unworkable.
这种合作很有可能行不通。
《柯林斯英汉双解大词典》
In his resignation letter, Morgan called the reorganization "unworkable".
摩根在辞职信中称，重组是“行不通”的。
