单词	自取传单
释义	自取传单take-ones
随便看	back-run process backrun process backrush backrush-- countercurrent-- reversing current backrush; countercurrent; reversing current backs back, sack, and crack back salary back sand back sand（back-up-sand） back saw backsaw back scatter backscatter backscatter, backscattering backscatter clutter backscatter coefficient backscatter cross-section back-scattered backscattered back-scattered dose backscattered electron backscattered electron image back-scattered electrons back-scattered radiation