практически невозможный
см. тж. почти невозможно
• Geographical and other conditions make the building of such structures financially or physically impracticable (or unfeasible).
Русско-английский научно-технический словарьсм. тж. почти невозможно
• Geographical and other conditions make the building of such structures financially or physically impracticable (or unfeasible).
Русско-английский научно-технический словарь