잉글리쉬쇼핑

arm’s length

• 
  의미:
  팔을 뻗으면 닿는[아주 가까운] 곳[거리, 길이].
  
  예시:
  He keeps all his clients at arm’s length.
  I always had the feeling she was keeping me at arm’s length.
  You can watch me cook, but stay at arm's length in case any hot oil spurts out of the pan.