n. 谈话的中心 topic of conversation

v. 把分散的聚集起来, 把意见、经验等归纳起来 concentrate, centralize and assemble (scattered people, objects, and strength), summarize opinions or experience; adj. 统一的, 不分散的 not scattered, concentrated, centralized

n. 许多人合起来的组织 collectivity

v. 用数字根据一定方法算出结果 count, calculate

v. 把听到的话或发生的事写下来 record, keep the minutes; n. 当场记录下来的材料 minutes, notes

v. 用事物或行动表示怀念 commemorate; n. 用来表示纪念的物品 souvenir, memorial