精选优质文档-倾情为你奉上Unit21. be delighted at sth. /to do sth. 高兴做某事2. take delight in sth./doing sth.3. to be brief = in brief 简言之4. compete in (a game) 在一个比赛中竞争5. compete with/against 与竞争6. take part in 参加7. separate A from B 分离，分开8. lighted candles 点燃的蜡烛9. graduation ceremony 毕业典礼10. break the record 打破记录11. be absent from 缺席，没参加，不在场12. in honor of 纪念，向表示敬意13. side by side / shoulder to shoulder 肩并肩地，齐心协力地14. hand in hand 手拉手，联合15. make contributions to
