。
, it is too late.
brittle
a. 1.易碎的，易损坏的；2.脆弱的，靠不住的; 3.冷淡的，不友好的; 4.(声音)尖厉的
A: What place did you come in in the race?
B: Third. I won a bronze.
bronze
n. 1.青铜；2.青铜色，古铜色; 3.青铜(艺术)制品，铜牌
A: This is a very complicated question, professor.
B: Brood on it for a while and maybe you will find the solution.
A: Are the hens sitting with their brood?
B: No, they seem to have neglected them.
brood
vi. 1.(on, over, about)沉思，考虑; 2.孵蛋
n. 1.(雏鸡等)一窝; 2.(一个家庭)全体孩子
A: If you walk up the east side of the mountain you will find a small brook where you can fill your bottles with water.
B: Great, I’m really thirsty, but is the water safe to drink?
brook
n. 小溪
vt. [常用于否定句或疑问句]容忍，忍受
A: Where were you this afternoon?
B: In the bookshop, just browsing.
browse
vi. 1.随意翻阅，浏览; 2. (牛，羊等)吃草
A: That is a nasty bruise.
B: Yeah, I fell down the stairs last week and hit my head.
A: He bruised me with his nasty comments.
B: Don’t listen to him then.
bruise
n. 1.青肿,挫伤; 2.(水果等的)伤痕，擦痕
vt. 1.打青，使受淤伤; 2.挫伤，伤害(感情等)
A: That was a brutal crime.
B: Yeah, there seems to be nothing but bad news these days.
brutal
a. 1.野兽般的，残忍的; 2.无情的，冷酷的，难以忍受的
A: How much is the fare?
B: Just two bucks, it is only a short journey.
A: The horse bucked and kicked me in the face.
B: Ouch! Why were you standing behind him?
A: Buck up, it is not the end of the world.
B: Easier said then done.
buck
n. 1.(一)美元，(一)澳元; 2.雄鹿,雄兔
vi. (马等)猛然弓背跃起
buck up (使)振奋，(使)打起精神
A: I like your new shoes.
B: Thanks, but the buckles are too stiff at the moment.
A: What happed to your bicycle?
B: The wheel buckled when I hit a stone in the middle of the road.
buckle
v. 1.用搭扣扣紧； 2.(使)变形，弯曲
n. 搭扣，扣环
buckle down 倾全力,开始认真从事
A: I am looking forward to the spring when the flowers will come into bud.
B: Me too, it has been a long winter.
bud
n. 叶芽,花蕾
vi. 发芽，萌芽
A: Do you think that the Buddhist way of life is the best?
B: I am not quite sure yet, I still need to think about it.
Buddhist
n. 佛教徒
a. 佛教的
A: Have you ever seen a buffalo?
B: No, but I would like to.
buffalo
n. 水牛，(北美)野牛
A: He used his pillow as a buffer against the noise.
B: Why, did he have difficulty sleeping?
A: The mirror needs a polish.
B: But I don’t
have anything to buffer it with.
buffer
n. 1.起缓冲作用的人(或物); 2.缓冲器,减震器
vt. 缓冲，减轻
A: Will there be any food at the party?
B: I heard