impregnable造句
ThedikethatisprotectedbyMangroveforestisimpregnable!Thelawyerwonhiscasewithanimpregnableargument.TheoldDutchfortwithitsthickhighwallslooksvirtuallyimpregnable.Wemustbuildforcesthatareasimpregnableasar...
ThedikethatisprotectedbyMangroveforestisimpregnable!Thelawyerwonhiscasewithanimpregnableargument.TheoldDutchfortwithitsthickhighwallslooksvirtuallyimpregnable.Wemustbuildforcesthatareasimpregnableasar...