钢筋网用于增强混凝土的强度。

The rebar mesh is used to ___reinforce the concrete.

老师经常表扬学生来强化他们的学习动力。

The teacher often praises students to ___reinforce their motivation to learn.

指挥官下令增派士兵以加强防御阵地。

The commander ordered to ___reinforce the defensive position with more soldiers.

工人们用钢筋加固了这面墙。

The workers used steel bars to ___reinforce the wall.