英语每日分享的内容（每日英语学习）

151.不同之处：difference

152.不修边幅：be slack about one’s appearance

153.不虚此行：be journey has not been made in vain

154.不宣而战：open hostilities without declaring war

155.不学无术：ignorant and incompetent

156.不一而足：not just once but on numerous occasions; by no means rare

157.不遗余力：spare o effort; stint no effort

158.不以物喜，不以己悲：not pleased by external gains, not saddened by personal losses

159.不义之财：ill-gotten wealth/gains

160.不亦乐乎：isn’t it a great pleasure?

161.不翼而飞：disappear unexpectedly; spread fast

162.不由分说：allowing no explanation

163.不由自主：cannot help doing sth; involuntarily

164.不远千里：make light of travelling a thousand li; make light of travelling from afar

165.不约而同：take identical action or share identical views without previous consultation

166.不在话下：be nothing difficult, be a cinch

167.不在其位，不谋其政：He who holds no rank in a state does not discuss its policies

168.不择手段：use any device, by any means

169.不折不扣：hundred per cent, to the letter, out and out

170.不正之风：unhealthy tendency, improper practice, malpractice

171.不知不觉：unconsciously, before one knows

172.不知凡几：innumerable, countless

173.不知好歹：can’t tell good from bad, not know what’s good for one

174.不知所措：be at one’s wit’s end, be quite lost, be bewildered

175.不知所云：can’t make out what is meant

176.不知所终：not know where sb. Spent the last years of his life

177.不知天高地厚：not know the height of the heavens or the depth of the earth—have an exaggerated opinion of one’s abilities

178.不知羞耻：have the effrontery to

179.不值一钱：not worth a penny, utterly worthless, mere trash

180.不治之症：incurable disease

181.不置可否：not say anything definite, make no comment

182.不着边际：wild

183.不自由，毋宁死：Give me liberty, or give me death.

184.不足挂齿：not worth mentioning, not worth taking seriously, nothing to speak of

185.不足为奇：small wonder

186.不足为训：not to be taken as an example

187.不足为外人道：This is not be mentioned to outsiders. This is strictly between ourselves.

188.不足为谋：not worth consulting with

189.不足之处：drawback, disadvantage

190.不做声：silent

191.步步高升：promoting to a higher position

192.步履蹒跚：with infirm steps

193.步履艰难：with infirm steps

194.步入后尘：follow in sb’s footsteps, follow upon sb’s hells, trail along

195.部优产品：ministry prize product