impracticable
例子
The manager realized that their expectations were impracticable given the current budget.
经理意识到，鉴于目前的预算，他们的期望是不切实际的。
The impracticable nature of the task discouraged many from even attempting it.
这项任务的不可行性使许多人甚至不愿尝试。
词汇树
impracticable
practicable
practice
