◎ 险要 xiǎnyào
[strategically located and difficult of access] 地势险峻而正当要冲

陡峭、险峻

1.strategically located and difficult of access

地势险峻而处于要冲的地位。《三国志·魏志·徐晃传》：“此阁道， 汉中 之险要咽喉也。”《古今小说·临安里钱婆留发迹》：“﹝ 钱鏐 ﹞乃选弓弩手二十名，自家率领，多带良箭，伏山谷险要之处。” 徐迟 《黄山记》：“它还特意委托风神带来名贵的松树树种，播在险要处。”