con·tract²/kən`trækt; kənˈtrækt/ v 1 [I] to become smaller 缩小; 收缩: Metal contracts as it becomes cooler. 金属冷却时收缩。 → opposite 反义词 EXPAND 2 [T] formal to get a serious illness 【正式】 感染〔严重疾病〕: Sharon contracted AIDS from a dirty needle. 雪伦从一根被污染的针上感染了爱滋病。