double file

短语

词形变化

double files 复数 double files

释义与例句

n.
  1. 1.

    A double line, especially, a queue two persons wide.

    In marching by double file, four abreast, etc., elbows touch and no lagging should be allowed.

    There are three double files of stalked glands, one along each leaf margin, roughly speaking, and two rows along the under leaf surface, […]