（3）在万恶的资本主义社会里，白求恩目睹劳动人民贫病交迫，悲惨死亡。他怀着拯救劳动人民的强烈愿望，发奋学医，刻苦钻研，成为欧美闻名的胸外科专家。

(3) In this vile capitalist society, Norman Bethune witnessed working-class people suffering from the dual burdens of poverty and illness, often meeting tragic deaths. Driven by a fervent desire to save laborers, he devoted himself to medical studies with relentless determination, ultimately becoming a thoracic surgeon recognized throughout Europe and North America.