Her hair started falling out as a result of radiation treatment.由于放疗,她开始掉头发。Cancer drugs often have unpleasant side effects, such as nausea and loss of hair.抗癌药物通常有不良的副作用,如恶心、掉头发。The drugs made her hair fall out.这种药使她掉头发。He's losing his hair.他在掉头发。Her hair started falling out.她开始掉头发。