形容詞 unworkable:

1. not capable of being carried out or put into practice
   同義詞：impracticable, infeasible, unfeasible

1. At first glance the plan seemed unworkable.
   乍一看此計劃好象不可行
2. Buyer undesirous of take risk therefore you quality guarantee imperative otherwise unworkable.
   買主不愿冒險，所以貴公司產品質量必須有保證，否則無法成交。
3. Proposition afraid unworkable try submit al terminative
   所提方案恐不可行，請另提其他方案。
4. In my submission these proposals are completely unworkable.
   在我看來，這些建議完全不可行。