When he reached the dragon's lair he saw that the cliffs of the ravine were so far across that building a bridge would take a year.
走到龙潭附近时，他发现峡谷的峭壁太过险要，要花一年的时间才能建造桥梁。Due to difficult terrain, known as "two lock and key unparalleled in Beijing, the Great Wall the first hurdle, " said.
因地势险要，素有“两京锁钥无双地，万里长城第一关”之称。Why home is not advantageous to the topography of a battleground of the ancient battlefield?
为什么故乡没有险要的地势成为兵家必争的古战场呢？The Yanmen Pass has glorious history. It has important military strategy status since the ancient times .
雁门关历史悠久，形势险要，自古以来就有重要的军事战略地位；Depending on the Changjiang River, the Kuomintang armies fought actively against their enemies, but they were still defeated.
国民党军队依凭长江险要，积极反抗，还是失败了。You can give an infantry company three hours to take a pillbox in a tough spot and they'll go in and take it.
如果你可以给一个步兵连三小时时间去占领一个位于险要地点的碉堡，他们是会进入阵地拿下碉堡的。Its commanding position, on a hill overlooking the Thames, seems the natural place for the principal building in the area.
它的险要位置在一座能够俯瞰泰晤士河的山上，象为那个区域的重要建筑物而存在的天然地理位置。The remote location, strategically located and difficult terrain, Preah Vihear Temple is quite well preserved.
由于地处偏远，地形险要，柏威夏寺保存得相当完好。Yizhou difficult terrain, there is a vast fertile land, is a fertile place, emperor emperor was established by virtue of its industry.
益州地势险要，有广阔肥沃的土地，是个富饶的地方，高祖凭借它建立了帝业。