4个数组合3个数共多少组简介：The three heavy cannons swallowed more than a dozen iron bullets in one breath. After the barrels became red and hot, they finally stopped bombarding. Then, the military flags waved, the horns whirred, and the Jianlu siege began.
The three heavy cannons swallowed more than a dozen iron bullets in one breath. After the barrels became red and hot, they finally stopped bombarding. Then, the military flags waved, the horns whirred, and the Jianlu siege began.
