◎ 凭险 píngxiǎn
[resort to strategically located place of difficult access] 凭据险要的地势
凭险抵抗

1.resort to strategically located place of difficult access

倚仗险要，据险。《梁书·武帝纪上》：“凭险作守，兵食兼资，风激电骇，莫不震叠。”《新唐书·卢怀慎传》：“边徼之地，夷夏杂处，凭险恃远，易扰难安。”