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back-to-back arrangement：背对背安装

保持架 cage | 背对背安装 back-to-back arrangement | 背锥 back cone ; normal cone

back-to-back arrangement：背向排列

"后退分段(熔接)次序","backstep sequence" | "背向排列","back-to-back arrangement" | "背托","back-up"

back-to-back arrangement：背对背柏靼

保持架 cage | 背对背柏靼 back-to-back arrangement | 背锥 back cone ; normal cone

back-to-back testing：背对背测试

back-scattering 反向散射 | back-to-back testing 背对背测试 | backbone cabling 主干线布线,主干布线

back space：退格符

back sight 过天顶测天瞄准器 | back space 退格符 | back space 退格

back space key：凿孔条倒退键

back slope || 后坡 | back space key || 凿孔条倒退键 | back space || 退位, (打字机)退格, 返回

back space file：回退文件

back space ==> 退位 | back space file ==> 回退文件 | back span ==> 反向间隔=>後ピッチ

Safe in the back seat：后面更安全

- we're fine back here. - Back's fine.|- 我们坐后面很好 - 后面就行 | Safe in the back seat.|后面更安全 | - Oh, my God. - what's up?|- 哦,天啊 - 怎么了?

back-to-school goods：学生用商品

back-to-front ratio ==> 反-正比 | back-to-school goods ==> 学生用商品 | back-track algorithm ==> 回溯算法

It was a flatbed truck with three huge sewer pipes on the back, so I spent::: It was days：那是一辆拖车,后面有三根大管子

and back up, and we got a rid... | It was a flatbed truck with three huge sewer pipes on the back, so I spent::: It was days|那是一辆拖车,后面有三根大管子 | in the back of this truck, in a sewer pipe, ...

White Mustard Seed Extract：白芥子提取物

Cherokee rose fruit extract 金樱子提取物 | White Mustard Seed Extract白芥子提取物 | Chinese Dodder Seed Extract 菟丝子提取物

snowstorm warning：暴风雪警告

28. weather report 天气报告 | 29. snowstorm warning 暴风雪警告 | 1. shake(名词)_______