re-,再，重新，in-,进入，使，force,力量。

1. Eventually, they had to reinforce the walls with exterior beams.

最终，他们不得不通过增加外梁来对墙体进行加固。

2. Such jokes tend to reinforce racial stereotypes.

这样的笑话容易渲染种族偏见。

3. We reinforce a troop again.

我们又增援一支军队.

4. A stronger European Parliament would, they fear, only reinforce the power of the larger countries.

他们担心一个更加强大的欧洲议会只会增强大国的力量。

5. Remember you want your visuals to reinforce your message, not detract from what you are saying.

要记住，使用视觉材料是为了使表达的意思更加清楚明白，而不能分散对所讲内容的注意力。