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turn one's back on / upon：背弃...,抛弃...;对...不闻不问

know... like the back of one's hand.对...了如指掌 | turn one's back on/upon...背弃...,抛弃...;对...不闻不问 | by the back door 通过后门;用不正当的途径

to turn one's back on：不理,看不起,背弃

背着某人说坏话 --- be behind one's back | 不理,看不起,背弃 --- to turn one's back on | 后退 --- to back away

Back veneer：(胶合板之)里板

back valve | 回动阀, 止回阀, 逆止阀, 单向阀 | back veneer | (胶合板之)里板 | back view | 后视图

Go way back：有交情,两个人在一起很长时间

.go way back 有交情,两个人在一起很长时间 | Angela and I go way back, we've known each other since elementary school. 我和An... | My boss and I go way back , she was my boss at my first job. 我和老板关系...

back yoke：后过肩

总肩 across back shoulder | 后过肩 back yoke | 背缝 center back seam

back blading：倒车叶片组

back bias 反馈偏压 | back blading 倒车叶片组 | back board 靠背板

back blading：倒刮

back-biased silicon diode 反向偏压硅二极管,反向偏置硅二极管 | back-blading 倒刮 | back-bombardment 反轰击

back blading：倒车叶片

反向偏压,负偏压 back bias voltage | 倒车叶片 back blading | (焊缝)清根,挑焊根 back chipping

back blading：倒车叶片装置(涡轮机的)

back bend molding | 一种边向后弯曲的油画外框 | back blading | 倒车叶片装置(涡轮机的) | back blow | 反冲, (枪炮的)反座

back geared：装有背齿轮的

back geared type motor 带减速器的马达 | back geared 装有背齿轮的 | back geosyncline 后地槽

tax assessor：估税员,税务稽核员

tax assessment税额查定 | tax assessor估税员,税务稽核员 | tax association税务协会

enterotomy scissors：剖肠剪

enterolithic structure 肠状构造 | enterotomy scissors 剖肠剪 | enterotoxaemias of sheep 绵羊肠毒血症