481 thirst /θɜːrst/ 渴，口渴 The heat creates a ～ in me like I’ve never had before
482 diffuse /dɪˈfjuːs/扩散（气体，液体等）：The colors of the sunset were diffused across the sky.
483 insure /ɪnˈʃʊr/保险，给。。。保险：Every father should insure his life for the sake of his wife and children
484 subordinate /səˈbɔːrdɪnət/ 下级的 In the army ,captains are ～ to majors
485 conflict /ˈkɑːnflɪkt/ （尤指长期的）战争，战斗 The conflict between Greece and Troy lasted ten years.
486 award /əˈwɔːrd/ 授予（奖品等） The university awarded him an honorary degree.
487 volunteer /ˌvɑːlənˈtɪr/ 志愿者，自愿参加者 Are there any ～s for a swim?
488 particular /pərˈtɪkjələr/特殊的，特别的 a matter of ～ importance
489 reveal /rɪˈviːl/ 揭示，揭露 I promise never to ～ his secret
490 greet /ɡriːt/问候，招呼：greet sb with a nod
491 distribute /ˈdɪstrɪbjuːt/ 分配，分发：distribute the prizes among the winners
492 reproach /rɪˈproʊtʃ/责备，指责，斥责 mute ～
493 opaque /oʊˈpeɪk/不透明的A brick wall is ～.
494 wholesome /ˈhoʊlsəm/ 有益于健康的 ～ surroundings
495 long /lɔːŋ/长的，远的，久的 a long journey
496 aggravate /ˈæɡrəveɪt/ 加重，加剧，恶化 aggravate the declining economy
497 deviate /ˈdiːvieɪt/背离，偏离：deviate from the rule
498 vibrate /ˈvaɪbreɪt/ 使震动，使摆动 His heavy footsteps upstairs made the old house ～
499 transform /trænsˈfɔːrm/变形，改观 ～ a hotel into a hospital
500 alert /əˈlɜːt/ 警惕的，留神的 In our reading we should always be alert for new usages.
501 overhaul /ˈoʊvərhɔːl/大修，全面检查，彻底革新～ a faulty machine
502 perform /pərˈfɔːrm/做，执行，完成～ an experiment
503 spoil /spɔɪl/ 损坏，毁掉 It would ～ my reputation
504 bar /bɑːr/ 条，块，杆，棒 a bar of gold
505 perfume /pərˈfjuːm/香水，香料，香气She loves French ～(s)
506 disclose /dɪsˈkloʊz/ 揭露，透露，使公开：disclose information to sb.
507 veto /ˈviːtoʊ/ 否决，否决权，否决权的行使 The rest of the committee could not accept the ～
508 plausible /ˈplɔːzəbl/论点等貌似有理的 a ～ excuse
509 urge /ɜːrdʒ/ 推进，鼓励 The president ,～d on by his staff, has decided to attend the talks
510 grieve /ɡriːv/使悲伤，使伤心：The little girl grieved over her kitten’s death
