Anh
impracticable
Đức
unausführbar
unbrauchbar
unpraktisch
unzweckmäßig
ungangbar
unwegsam
Pháp
impraticable
impracticable /ENG-MECHANICAL/
[DE] ungangbar; unwegsam
[EN] impracticable
[FR] impraticable
Not feasible.