estimate v.估计;预估 -d adj.估计的restrict v.限制;制约;限定eventually adv.终于;终究badge n.徽章;证章pipeline n.管道 pipe n.管;管子;导管;烟斗figured out 想通了reminder n.提醒persist the data 持久化数据 persist v.坚持user experience 用户体验 experience v./n.经验;经历