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1931年9月18日,日本发动侵华战争。自1934年到太平洋战争爆发后,日军分三期在我国东北和苏联国境线上呈扇形秘密修筑了大量的筑垒地域和地下军事要塞,目标是进攻苏联和控制东北,堪称亚洲之最,日本关东军称之为“东方马其诺防线”。勃利密塞位于两条相交呈“”形的山沟之间的大
On September 18, 1931, Japan launched the war of aggression against China. Since the outbreak of the Pacific War in 1934, the Japanese army built a large number of fortified regional and underground military fortifications in fan-shaped secrets in the northeastern part of China and the Soviet Union in three phases. The goal is to attack the Soviet Union and control the northeast, which is the highest in Asia. The Japanese Kwantung Army calls it the “Oriental Maginot Line.” Brisemet is located between two “” shaped ravines