fumble
v.摸索，搜寻
She fumbled about in her handbag for her passport.
她在手提包里摸索着找护照。
investigate
vt.调査(inspect, probe)；研究
The police are investigating the robbery.
警方正在调查这起抢劫案。
abortive
adj.失敗的 (unsuccessful)
absurd
adj.荒谬的 (ridiculous)
Wearing a swimming suit during a snowstorm is absurd.
在暴风雪中穿游泳衣是荒唐的。
blunder
v.犯大错 (make foolish mistakes, bungle)
I really blundered when I forgot to introduce my friends.
当我忘记介绍我的朋友时，我真的犯了大错。
credulous
adj.轻信的
defective
adj.有缺陷的
His defective hearing has affected his pronunciation.
他的听力有缺陷，影响了他的发音。
defect
n.缺陷 (fault, shortcomings, imperfection)
The manufacturer didn't sell the car due to a defect in the engine
由于发动机有毛病，制造商没有把汽车卖掉。
drawback
n.弊端 (disadvantage, defect, demerit)
The draw back to working the morning shift is having to get up early.
上早班的人不得不早起。
err
vi.犯错 (mistake)
Bill erred when he said Detroit is the capital of Michigan.
比尔说底特律是密西根州的首都，他错了。
erroneous
adj.错误的 (incorrect, mistaken)
The so called facts you gave me were totally erroneous.
你给我的所谓事实完全是错误的
fallible
adj.易错的
He knows every rule in the factory, but still fallible.
他知道工厂里的每一条规则，但仍然容易出错。
flaw
n.缺点，瑕疵 (fault，defect)
The flaw in your theory is that you didn't account for gravity.
你的理论上缺陷是没有考虑重力。