viability

n. 生存能力,发育能力

version, versus, vertebrate, vertical, vertically, vertigo, verve, very, Very light, very much, vessel, vest, vestige, vestigial, vestment, veteran, veto, vex, vexation, via, viable, vibrancy, vibrant, vibrate, vibration, vicar, vicarious, vicariously, vice, vice versa, Vichy, vicinity, vicious, viciously, viciousness, vicissitude, vicissitudinous, victim, victimization, victimisation, victimize,