1有用的
英语:helpful, available, expedient, favourable, serviceable, subservient, useful
西班牙语:beneficioso, bueno, provechoso, servible, útil
2有益的
英语:beneficial, useful, advantageous, benignant, good, helpful, profitable
西班牙语:beneficioso, benéfico, conveniente, provechoso, saludable, útil
3无害的
英语:hurtless, innocuous, innoxious, inoffensive, safe, unoffending
西班牙语:benigno, innocuo, inofensivo
