To prevent the dam from cracking under pressure, workers added steel rods to reinforce its concrete structure.
为了防止大坝在压力下开裂，工人们添加了钢筋来加固其混凝土结构。
Sociologist Marcus Delaney notes that these algorithms are trained on historical arrest data, meaning they can direct increased patrol presence to neighborhoods that were already over-policed in the past, reinforcing existing patterns rather than neutrally identifying risk.
From a Cross-Text Connections question · Craft and Structure
Which choice best defines “reinforce”?
D — Strengthen. “reinforce” means strengthen.
Which word means “strengthen”?
B — reinforce. “reinforce” means strengthen.
reinforce — strengthen. In Chinese: 加强，强化.
reinforce is pronounced /ˌriːɪnˈfɔːrs/.
To prevent the dam from cracking under pressure, workers added steel rods to reinforce its concrete structure. (为了防止大坝在压力下开裂，工人们添加了钢筋来加固其混凝土结构。)
strengthen, bolster, fortify — all close in meaning to reinforce (strengthen).
weaken, undermine — each the opposite of reinforce (strengthen).
Yes. reinforce is on the SAT Prep Easy list — mid-frequency academic words that do get tested. The Digital SAT does not test vocabulary in isolation; words like this one are tested through Words in Context questions, where you choose the word that completes a passage most logically and precisely.
re(again)+in(strengthen)+force(power)