A: I’m taking part in a march against racism.
B: Great, I hope that it helps the various different nationalities in the country.
racism
n.1.种族歧视，种族偏见; 2.种族主义
A: Would you like to have a game of tennis?
B: I’d love to, but I don’t have a racket.
racket
n.1.喧嚷，吵闹; 2.敲诈，勒索，诈骗; 3.（网球等的）球拍
A: You look radiant tonight.
B: Thanks for the compliment.
radiant
a.1.容光焕发的，喜形于色的; 2.光芒四射的，光辉灿烂的; 3.辐射的
A: Wow, the weather was hot today.
B: Yes, the sun radiated great heat.
radiate
v.1.发出（光或热），辐射; 2.流露，显示
A: I heard that radioactive waste was dumped into the sea.
B: I know, isn’t it shocking?
radioactive
a.放射性的，有辐射能的
A: I want to rent a house within two mile radius of my workplace.
B: That is a sensible decision.
radius
n.1.半径，半径范围; 2.周围，范围
A: Did you buy a new computer?
B: No, I won it in a raffle.
raffle
n.对奖售物，抽彩
vt.(off)用对奖办法出售
A: How did you travel down the river?
B: We built a raft and floated down it.
raft
n.1.木排，木筏; 2.充气救生筏，救生圈
vt.用筏子运送
vi.乘筏子渡河
A: Did you climb to the top of the mountain?
B: No, the cliffs were too ragged and dangerous to climb.
ragged
a.1.（衣服）破旧的，褴褛的; 2.衣衫褴褛的; 3.不规则的，参差不齐的，凸凹不平的;
4.粗糙的，不完善的，差劲的
A: I want to do some gardening, did you see the rake?
B: Yes, it is in the garage.
rake
n.1.耙，草耙，钉齿耙; 2.斜度，倾角
vi.1.耙 ; 2.搜索，核查
vt.1.耙集，耙平，耙松; 2.扫射，扫过
rake in
大量敛集（钱财）
rake up
1.耙集，集拢，耙开，扒开; 2.翻出（旧事等）重提
A: I am constructing a ramp to avoid the steps up to my building.
B: Good, that will take it accessible to wheelchairs.
ramp
n.1.斜面，坡道; 2.活动舷梯，轻便梯
A: The rats are rampant on my farm.
B: Why don’t you get a cat to kill them?
rampant
a.1.（犯罪、疾病等）猖獗的，肆虐的; 2.（植物）蔓生的，过于繁茂的
A: How many horses do you have on your ranch?
B: Oh, I have both trained and wild horses, but I’m not sure how many.
ranch
n.1.大牧场; 2.饲养场
A: You were lucky to get into this university.
B: I was indeed lucky, I chose it at random.
random
a.任意的，随机的
at random
随便的，任意的
A: Do you enjoy being a park ranger?
B: Oh yes, I love the outdoors.
ranger
n.1.国家公园管理员，护林员; 2.骑兵巡逻队员
A: My boss was kidnapped!
B: Was he held for ransom?
ransom
n.赎金
vt.赎出，赎回
hold sb to ransom
掳某人索赎，要挟某人
A: Can you make a song out of your poem?
B: No, but I could try to rap it.
rap
vt.1.（轻而快地）敲击，急敲; 2.(out)突然厉声说出; 3.责备，训斥
n.（轻快的）敲击（声），急敲（声）
A: For what offence was the criminal convicted?
B: He was convicted for two counts of rape.
rape
vt./n.强奸
A: I didn’t realize that you were going to move house.
B: I didn’t either until yesterday, it was a rash decision.
rash
a.轻率的，鲁莽的
n.1.疹，皮疹; 2.（短时期内）爆发的一连串
