日本700万兵力为何投降?原子弹背后的四重困局,原子弹阴影下的日本投降,700万兵力背后的四重困境
Why did Japan surrender its 7 million troops? The quadruple predicament behind the atomic bomb, Japan's surrender under the shadow of the atomic bomb, and the quadruple predicament behind 7 million troops
以上为机器翻译结果，长、整句建议使用 人工翻译 。