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1·Overall, the odds that a person will develop a malignant (cancerous) brain tumor in his or her lifetime are less than 1 percent.

总体来看，一个人一生中罹患恶性脑瘤(癌症)的几率低于百分之一。

2·Near the characteristic peaks of laser Raman spectrograms of serums from the cancerous patients, the normal person′s serum has no Raman spectrogram characteristic peak.

在各类癌症患者血清的激光拉曼光谱图特征峰附近，正常人血清均没有拉曼光谱特征峰。