B 开头单词

back in time 时光倒流，回到从前

back in the usa

back in the saddle

back in stride

back in rocker [体育]后内内勾形后内勾形

back in loop change loop [体育]后内单脚结环形

back in circle [体育]后内圆形

back in a moment 马上回来

back in 后内刃

back hub 后视标杆

back hood yoke width [语言学]后帽育克

back home again

back hoe 反向铲；反铲挖土机

back hearth [土木建筑工程]炉灰腔

back haunch fillet of arch [交通运输工程]护拱

back haul [通信] 空载传输；返航，回送

back hand welding [能源科学技术]反手焊接

back hand

back half of the stalls [艺术学]一楼观众席后座

back ground 背景