free substitution

短语

[计] 自由代换

词形变化

free substitutions 复数 free substitutions

释义与例句

n.
  1. 1.

    A rule in some sports that allows players to enter and leave the game for other players many times during the course of the game, and for coaches to bring in and take out players an unlimited number of times.

    可数 不可数 体育