1)unbound,游离的，自由的2)free,自由的，任意的，游离的3)deflection of a free falling particle,自由落体的偏离4)It is within his prerogative to leave.,离席是他的自由。5)free end-play,自由的轴向窜动［游隙］6)free radical,游离基;自由基
用法和例句
The deflection of a free falling particle is calculated by the methodof perturbation in a rotating frame.