reinforcement
noun
ˌriːɪnˈfɔːsmənt noun
1
reinforcements
more soldiers, police etc who are sent to a battle, fight etc to make their group stronger 援兵，增援部队 plural 复数
The police called for reinforcements .
警方要求增援。
2
positive/negative reinforcement
positive reinforcement is when you give someone praise or rewards for their behaviour or work, so they want to continue doing well. Negative reinforcement is when you give someone punishments or criticism when their behaviour or work is bad, so that they want to improve to avoid punishments again. 正强化/负强化〔正强化指给予某人表扬或奖励后，他会继续表现得很好; 负强化指给予某人惩罚或批评后，他就会改正以免再次受到惩罚〕
We need to give students plenty of positive reinforcement .
我们需要给学生足够的正面鼓励。
3 the act of making something stronger 加强，加固 U
The bridge needs some structural reinforcement.
这座桥需要进行结构加固。