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The Centers for Disease Control, for example, found that fewer than one-fourth of overweight adults who were trying to shed pounds said they were combining exercise with their diet.

例如，疾病控制中心发现，在试图减肥的超重成年人中，只有不到四分之一的人表示，他们会将锻炼与饮食结合起来。

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Fourth, heatwaves, especially in urban "heat islands", can directly increase morbidity and mortality, mainly in elderly people with cardiovascular or respiratory disease.

第四，热浪，特别是城市“热岛”，可直接使发病率和死亡率上升，主要涉及患心血管病或呼吸道疾病的老年人。

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The infected California cow confirmed Tuesday was America's fourth case of mad cow disease.

CNN: STORY HIGHLIGHTS

According to Cancer Research UK some 41, 000 men are diagnosed with prostate cancer every year, but 10, 700 will die of the disease, making it the fourth most common cause of cancer death - and second only to lung cancer in men.

BBC: 'Cinderella cancer' comes in from the cold

Strokes are the fourth biggest killer after cardiovascular conditions, cancers and respiratory disease.

BBC: Stroke campaign by pharmacists to cut number of victims