buddy system

汉语翻译

英语解释：

名词 buddy system:

1. a cooperative practice of pairing two or more people together for mutual assistance or safety (especially in recreational swimming)

例句：

1. A partner, especially one of a pair or team associated under the buddy system.
   伙伴合作者，在指在水底双人侦察制中在一组或一队中合作的人