More people suffer from pain than from heart disease, diabetes and cancer combined, but many of the drugs used to relieve suffering are not completely effective or have harmful side effects.
越来越多的人因心脏疾病，糖尿病和癌症而忍受疼痛，但是很多用来缓解疼痛的药物并不是完全有效或者有危害性的副作用。
More people suffer from pain than from heart disease, diabetes and cancer combined, but many of the drugs used to relieve suffering are not completely effective or have harmful side effects.
越来越多的人因心脏疾病，糖尿病和癌症而忍受疼痛，但是很多用来缓解疼痛的药物并不是完全有效或者有危害性的副作用。
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