1自动的
英语:autokinetic, automatic, self-acting, self-driven, self-loading, self-moving, voluntary
西班牙语:automático, automotor, automóvil
2自愿的
英语:freewill, of one's own accord, unbidden, voluntary, willing
西班牙语:espontáneo, voluntario
3强迫的
英语:forced, impellent, coercionary, coercive, compulsive, compulsory, forcible, nonnatural