single file
剑桥词典
- a way of walking with one person behind another
單行，一路縱隊
The schoolchildren were told to walk in single file . 小學生們被要求排成一路縱隊前進。 返回 single file
單行，一路縱隊
The schoolchildren were told to walk in single file . 小學生們被要求排成一路縱隊前進。 返回 single file