Impractical; not considering practical implementation or feasibility. Used when an idea or theory exists but is difficult to apply in reality.
その設計は美しいが、現場の条件を無視していて非実際的だ。
The design is beautiful but impractical because it ignores on-site conditions.
非実際的な方法ではなく、現実に即した解決策を探そう。
Let's look for solutions grounded in reality rather than impractical methods.
理論的には可能でも、コストが高すぎて非実際的だ。
Even if it's theoretically possible, it's impractical because the cost is too high.