1. Down syndrome is a genetic disorder caused by the presence of an extra copy of chromosome 21.
唐氏综合征是一种由21号染色体多余副本的遗传疾病。
2. Stockholm syndrome refers to the psychological phenomenon where victims start to sympathize and align with their captors.
斯德哥尔摩综合症是指受害者开始同情并与他们的绑架者产生情绪共鸣的心理现象。