Warning: file_put_contents(): Only 0 of 4983 bytes written, possibly out of free disk space in /www/wwwroot/ppbbu/cp667.com/index.php on line 55 unconditioned stimulus英英字典_unconditioned stimulus剑桥英语解释_unconditioned stimulus柯林斯英文解释_淳朴汉英词典
1. N any stimulus evoking an unlearnt response, esp in the context of classical conditioning, in which the conditioned stimulus is followed by the unconditioned one 無條件刺激[psychol]