Warning: file_put_contents(/www/wwwroot/ppbbu/4cd.cn/cache/d622af114f97b983956c3fbb344aa785.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/4cd.cn/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_沉淀汉英词典
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 无条件刺激[psychol]