sound [saund]
合理的

absurd[əb'sə:d] ab+sound
ridiculously unreasonable, unsound, or incongruous
completely ridiculous; not logical and sensible
things that are or that seem to be absurd
adj. 荒谬的；可笑的
n. 荒诞；荒诞作品

absurdity [əb'sə:dəti]
n. 荒谬；谬论；荒谬的言行

例句
I can't believe that the prize was awarded to that play consisting of absurd conversations.
我不敢相信，那部由荒诞的对话堆砌而成的戏剧居然获奖了。
It is an absurd theory and no one will believe it.
这是一个荒谬的理论，没有人会相信。

耶鲁公开课 - 古希腊历史简介课程节选
If we do that, the Greeks would have said, "That is stupid and absurd to think for ten seconds you'll realize that's no good."
如果我们这么做,那古希腊人会说,"那是一派胡言,你只要想个十秒钟就能明白这样没好处.

obstinate：['ɔbstinit] ob=ab sti=stin=stand 停止，停滞
unreasonably determined, especially to act in a particular way and not to change at all, despite argument or persuasion
describes a problem, situation or thing that is difficult to deal with, remove or defeat:
adj. 顽固的(立场反动,不愿意改变)；倔强的；难以控制的

毛泽东 《新民主主义的宪政》：“什么叫顽固？固者硬也，顽者，今天、明天、后天都不进步之谓也。”

例句
He is so obstinate that he still tries to defend his theory,although it has been proved wrong.
他固执极了,尽管他的理论已被证明是错的,可他还在设法为其辩护。

She’s too obstinate to let anyone help her.
她太倔强了, 不会让任何人帮她的。

趣味单词

Shrek shriek

shriek[ʃri:k]
to give a loud high shout, for example when you are excited, frightened or in pain
a short, loud, high cry, especially one produced suddenly as an expression of a powerful emotion
v尖叫；促人注意
n. 尖声；尖锐的响声

例句
She shrieked at the sight of the cobra.
她一见到眼镜蛇便尖叫起来。
She let out a shriek of laughter.
她尖声大笑了一声。
Outside the courtroom girls shrieked abuse at the lawyers.
法庭外面,女孩子们尖声辱骂律师。

耶鲁公开课 - 心理学导论课程节选

If there was a bowl of fruit up there as you walked in, it'd be incongruous but people wouldn't shriek with laughter and point to the fruit.

如果你走进教室,看到这里有一碗水果，这也是不一致,但你不会高声大笑地指着水果。

昨日重现

1999年6月CET-6真题
There was once an _____ idea that the earth was flat and motionless.

A.absurd
B.intrinsic
C.eternal
D.offensive

2002年6月CET-6真题
Even sensible men do _____ things sometimes.

A.abrupt
B.absurd
C.acute
D.apt

2005年12月CET-6真题
It seems somewhat _____ to expect anyone to drive 3 hours just for a 20-minute meeting.

A.eccentric
B.impossible
C.absurd
D.unique

答案 ABC