| 不大不小 neither too big nor too smal... |
| 不大可能的事 something improbable |
| 不大好 not very good |
| 不大妥当 not quite proper |
| 不大清楚 not too clear |
| 不大离儿 pretty close |
| 不大高明 It is not up to much. |
| 不太好 not well |
| 不失为 can yet be regarded as |
| 不失体面 not lose face |
| 不失时机 seize the opportune moment |
| 不失时机地做某事 lose no time in doing sth. |
| 不失毫厘 be perfectly accurate |
| 不失真信号 undistorted signal |
| 不夷不惠 One's disposition is neither... |
| 不好不坏 neither better nor worse no.... |
| 不好惹 not to be trifled with |
| 不好意思 embarrassed |
| 不好意思再问 hesitate to ask again |
| 不好意思推辞 find it difficult to refuse |
| 不好相处 difficult to get along with |
| 不好过 unwell |
| 不如 not equal to |
| 不如归去 it would be better to return... |
| 不妊娠 acyesis |
