Việt
đất chắc
đất vững
Anh
solid ground
firm ground
solid formation
Đức
tragfaehiger Boden
Pháp
sol résistant
terrain résistant
terrain solide
firm ground,solid formation,solid ground
[DE] tragfaehiger Boden
[EN] firm ground; solid formation; solid ground
[FR] sol résistant; terrain résistant; terrain solide
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