keep a tight rein on

短语

对...严加约束

词形变化

keeping a tight rein on keeps a tight rein on 三单 keeps a tight rein on kept a tight rein on keeping a tight rein on 现在分词 kept a tight rein on 过去式 kept a tight rein on 过去分词

释义与例句

v.
  1. 1.

    To exercise strict control over; keep in check.