[, ]an explanation or a description of sth解释；描述◆Can you give me a brief rundown on each of the applicants?请你给我简要介绍一下每位应征者的情况好吗？ () a reduction in the amount, size or activity of sth, especially a business（尤指商业）削减，紧缩◆300 jobs are being cut because of a rundown in repair work.维修工作的减少导致 300 个职位被裁减。◆a rundown of transport services运输服务业的萎缩➡run down at run verb