4VERB 为(军队或警察队伍)增加力量(或装备);向(某地)增兵;增援 To reinforce an army or a police force means to make it stronger by increasing its size or providing it with more weapons. To reinforce a position or place means to make it stronger by sending more soldiers or weapons. 为(军队或警察队伍)增加力量(或装备);向(某地)增兵;增援
Both sides have been reinforcing their positions after yesterday's fierce fighting. [VERB noun]
双方经过昨天的激战后都在向各自的阵地增派兵力。
Troops and police have been reinforced in the southern Pakistan city of Hyderabad. [VERB noun]