单词	做预备动作
释义	做预备动作phr.flex muscles屈伸肌肉，做预备动作
随便看	method of squares method of starting method of stationary phase method of steepest ascent method of steepest descent method of streamline curvature method of study method of substitution method of successive approximation method of successive approximations method of successive comparision method of successive conjugates method of successive displacements method of successive substitution method of successive substitutions method of successive thinning method of summation method of superposition method of sweeping out method of symmetrical component method of symmetrical coordinate method of symmetrical coordinates method of synthesis method of teaching method of telemetering