Việt
dưới bậc
Anh
below grade
hitch
layer
level
underground
Đức
unter Planungshöhe
unterirdisch
Pháp
souterrain
below grade,underground
[DE] unterirdisch
[EN] below grade; underground
[FR] souterrain
below grade, hitch, layer, level
unter Planungshöhe /adj/XD/
[EN] below grade
[VI] dưới bậc