起关键作用的成分是番茄红素，这种抗氧化剂已被确定可降低男性患前列腺癌和心脏病的风险。
The key ingredient is thought to be the lycopene, the antioxidant already credited with cutting the risk of prostate cancer in men and protecting against heart disease.
科学家不确定遗传在肥胖上面起多大的作用，但是预测它所占比例从最低20%到最高90%。
Scientists are unclear as to how much of a role genetics plays in how chubby you are, but estimates range from as low as 20 percent to as high as 90 percent.
从Joanna Yeates的尸体被发现的那一刻起，侦探们就强调科学在确定她死亡的方式以及找到杀死她的凶手上起到多么重要的作用。
From the moment Joanna Yeates's body was found, detectives emphasised how important scientific work would be in establishing how she had died and convicting her murderer.
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