step back怎么读：英 [step bæk] 美 [stɛp bæk]
step back是什么意思：后退，退居不重要的部位；退坡儿；退后；却
step back的例句和用法
双语例句
Instead of pressing forward, they drew back.
他们不仅没有前进，反而后退了。
The horrid sight made me draw Back.
可怕的景象令我后退。
权威例句
An in vitro comparison of the efficacy of the step-back technique versus a step-back/ultrasonic technique in human mandibular molars.
An in vivo comparison of the step-back technique versus a step-back/ultrasonic technique in human mandibular molars.
Comparison of balanced forces, endosonic, and step-back filing instrumentation techniques: quantification of extruded apical debris
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