lone
adjective [ before noun ] uk/ləʊn/ us/loʊn/
单独的，独自的
alone
a lone survivor 唯一的幸存者
He was a lone voice (= the only person) arguing against a reduction in payments. 他是唯一反对减薪的人。
lone parent/mother/father 单亲／单身母亲／单身父亲
someone who has children but no partner living with them