1.不可一世
as proud as a peacock.
2.不可救药
beyond remedy.
3.不由自主
in spite of oneself
4.不自量力
go beyond one's depth (overrate one's abilities)
5.不屈不挠
keep his chin up. (as steady as a rock; firm and unyielding; fight for tooth and nail; hang on by the eyelashes; stick to one's color)
6.不知死活
heedless of consequence
7.不知好歹
know chalk from cheese.
8.不耻下问
not above asking questions.
9.不假思索
He often speaks impromptu即席地.
10.不偏不倚
the judge held the scales even.
注：
beyond remedy：不可救药，病入膏肓
dozed off：打瞌睡(打盹儿)
ask for trouble：自找麻烦，自讨苦吃
