关于impregnable的百科

• impregnable造句怎么写

• ThedikethatisprotectedbyMangroveforestisimpregnable!Thelawyerwonhiscasewithanimpregnableargument.TheoldDutchfortwithitsthickhighwallslooksvirtuallyimpregnable.Wemustbuildforcesthatareasimpregnableasarock.Fundamentally,hebelievesthatcreatingimpregnabl...
• 2017-03-019971