negative ads负面广告negativeadj.否定的；消极的；负面的；负的n.否定；反面意见；底片；[数]负数vt.否定negative ion blemish负离子斑negative consequences消极结果negative definiteness负定性negative acceleration负加速度negative energy state负能态negative neutral term负中立型项negative relationship互逆影响negative strant virus负线病毒negative plaster cast阴性石膏, 负石膏Negatively Associated负相协