countdown 'kauntdaun
释义
n. 倒计数
[电] 指示串联中的操作数固定的记录减少
英文释义
n. counting backward from an arbitrary number to indicate the time remaining before some event (such as launching a space vehicle)
BNC词频排名: 19,386 | 当代语料库词频排名: 14,708