1. 不瞅不睬 neither look nor give attent...
  2. 不矜不伐 neither show arrogance nor s...
  3. 不矜不躁 be neither proud nor irascib...
  4. 不矜细行 pay no attention to small ma...
  5. 不知 not to know
  6. 不知下落 not to know the whereabouts ...
  7. 不知不觉 imperceptibly
  8. 不知不觉已过了三个月 Three months have passed bef...
  9. 不知世事 know nothing about what is g...
  10. 不知人事 unreasonable
  11. 不知人间有羞耻事 be lost to all sense of sham...
  12. 不知什么事使他不能来 Something or other prevented...
  13. 不知从何下手 not know where to start
  14. 不知从何入手 not know where to begin
  15. 不知何故 not know why
  16. 不知你是否可以告诉我 I wonder if you can tell me....
  17. 不知几许 No one can tell how much.
  18. 不知凡几 can't tell how many there ar...
  19. 不知分寸 indiscreet
  20. 不知分晓 not to know the outcome
  21. 不知去向 disappear without a trace
  22. 不知因数 ignorance factor
  23. 不知天高地厚 not to know the immensity of...
  24. 不知好歹 not to know good from bad
  25. 不知如何下笔 be at a loss as to how to be...
  26. 不知如何是好 not know which way to look
  27. 不知始于何时 not know exactly when this c...
  28. 不知尚有几何 uncertain how much is left o...
  29. 不知就里 not to know the inside story
  30. 不知底细 not know the inside story
  31. 不知怎好 Don't know what to do.
  32. 不知情 know nothing about
  33. 不知感恩 not to know what is grateful...
  34. 不知所之 Don't know where he went.
  35. 不知所云 do not know what oneself or ...
  36. 不知所以 not knowing why it is so
  37. 不知所措 be at a loss what to do
  38. 不知所答 puzzled how to answer
  39. 不知所终 have never been heard of sin...
  40. 不知机变 be not accommodating
  41. 不知死活 act recklessly and blindly
  42. 不知深浅 not to know the depth of thi...
  43. 不知甘苦 do not know how difficult it...
  44. 不知羞耻 not to know what shame is
  45. 不知老之将至 not to know the insidious ap...
  46. 不知者不罪 No blame attaches to the unc...
  47. 不知耻 have no sense of shame
  48. 不知自爱 having no knowledge of self-...
  49. 不知自量 undertake what is beyond one...
  50. 不知虚实 not to know whether it is fa...

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