459．n.轻拍 v.轻拍pat on the back赞扬：赞扬或同意的话或手势：

(例) received a pat on the back for doing a good job.工作干得出色而得到赞扬

(例) He patted the boy on the head.他轻拍那男孩的头。

460．peak   n.山顶, 顶点，顶峰

(例) It was the peak of summer in Ningbo. 这是宁波夏季最热的时期。

461．phenomenon  n.现象【复数】 phenomena

(例) a natural phenomenon自然现象   a social phenomenon社会现象

462．reluctant  adj. 不情愿的, 勉强的

(例)a reluctant smile  勉强的微笑  reluctant to help不情愿帮忙

463. rely   vi. (on, upon)依赖， 指望

(例) She relies on her parents for tuition. 她的学费依赖于她的父母。

464．relevant  adj.有关的, 相应的

(例)The scientist corresponds with colleagues in order to learn about matters relevant to her own research. 那个科学家和同事们相互通信以了解和她自己的研究有关的事。

465. reliable  adj.可靠的, 可信赖的

(例) a reliable source of information 可靠的消息来源  a reliable assistant可靠的助手

466. relief   n. 轻松，宽慰，减轻

(例) It was a great relief to find they are safe. 得知他们平安无事才叫人大为宽心。

（例）Will this medicine give immediate relief from pain?吃了这药能马上止痛吗？

467．reputation  n.名誉, 名声

(例) If the fact is published, it will ruin your reputation. 一旦公布事实真相将会毁了你的名誉。

468．rescue  vt.援救, 营救   n.援救, 营救

(例)It was not long before a helicopter arrived on the scene to rescue the survivors of the plane crash.不久一架直升飞机飞到了现场，来搭救这次飞机失事的幸存者。

469. triangle  n. 三角形

(例)a triangle of land 三角形的一块地

470. sequence  n. 连续，顺序  in sequence一个接一个；依次地

(例) a sequence of victories一连串的胜利  in chronological sequence按照年代顺序地

471. shallow  adj. 浅的；肤浅的

(例) The stream is shallow.那条小溪水很浅。   a shallow person肤浅的人

472．shiver  vi/n. 发抖，打颤

(例) The divers were shivering with cold.那些潜水员冷得直打颤。

（例）A shiver ran down my back. 我打了个冷颤。

473．shrug  v/n. 耸肩  shrug off 对…不屑一顾：缩小…的重要性：

(例) shrugged off the defeat and talked about tonight's game.对失败不屑一顾而谈论今晚的比赛

（例）He shrugged, saying that he had nothing to do with it.他耸耸肩膀说，他和那事毫无关系。

474．signature  n. 签名

(例) He put his signature on the contract.他在那份合同上签了名。

475．sincere  adj. 诚挚的，真诚的

(例) His apology didn’t seem sincere. 他的道歉看起来不是真诚的。

476．utility  n. 功用，效用

(例) I have always doubted the utility of these conferences on disarmament.

我一直怀疑这些裁军会议的效用。

477. utilize  vt. 利用

(例) In the 19th century waterpower was widely utilized to generate electricity.

在19世纪人们大规模使用水力来发电。