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因地势险要,素有“两京锁钥无双地,万里长城第一关”之称。
Due to difficult terrain, known as "two lock and key unparalleled in Beijing, the Great Wall the first hurdle," said.
youdao
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因地势险要,素有“两京锁钥无双地,万里长城第一关”之称。
Due to difficult terrain, known as "two lock and key unparalleled in Beijing, the Great Wall the first hurdle," said.
youdao