四个数字有多少种组合

简介：And just one day before arriving in the capital, the Denglai Army reported that the Denglai Navy, together with the Marine Battalion and Denglai soldiers, totaling 20,000 people, had crossed the sea by boat and, in accordance with the combat techniques of the Military Aircraft Department, attacked the Jianlu Liaodong coast. , launched a large-scale harassment attack.