ranch
ranch/ræntʃ或rɑ:ntʃ/n.［c］（美国兼种果树，养鸡等的）大牧场：He went to work on a ranch.他去一个大农场干活。He left his Montana ranch to his spinster sister.他把他在蒙大拿州的大···
random
random/ˈrændəm/adj.任意的，随机的：a random sample of people随意抽取的人选；a random choice任意选择at random随便地，任意地：guess at random瞎猜；open a book at random随便打开一本···
range
range/reindʒ/ I.n.［c］1.幅度，范围，距离：the annual range of temperature全年的气温变化幅度；a wide range of choice广泛的选择范围His reading is of very wide range.他的阅读范围很广···
ranger
ranger/ˈreindʒə/n.［c］巡逻骑兵，护林员；漫游者：rangers of the mountains山峦漫游者；forest ranger林警，管林员He was the head ranger of the national park.他曾是国家公园的首席看守···
rank
rank/ræŋk/ I.n.［c］1.职位，等级；官衔：a university of first rank一流大学；hold the rank of captain拥有上尉军衔［考句］His temper and personality show that he can become a soldi···
ransom
ransom/ˈrænsəm/I.n.［u］1.赎金：They have to pay a large ransom.他们不得不付一大笔赎金。2.用于习语hold sb. for/to/at ransom将某人绑票：She was kidnapped and held for ransom.她被···
rap
rap/ræp/ I.n.［c］敲击声：There was a series of raps on the window.有人连续敲击窗户。‖II.vt.&vi.（轻而快的）敲击：She rapped (on) the table to get everyone’s attention.她敲击···
rape
rape/reip/ I.n.［c］&［u］强奸：He had committed several rapes.她犯了几次强奸罪。He was convicted of rape.他被判有强奸罪。‖II.vt.&vi.强奸：She was pulled from the car and ···
rapid/rapidly
rapid/ˈræpid/ I.adj.快的，迅速：The improvement was rapid.提高是快的。The train was now going at a rapid rate.火车正以快速前进。‖II.n.急流，湍流(pl.): descend the rapids of the ···
rare/rarely
rare/rɛə/adj.1.稀有的，难得的：a rare metal稀有金属；on rare occasions难得，不常It is rare for him to come late.他很少迟到。2.稀薄的，稀疏的：the rare air of the mountains山上稀薄···
