keep someone at arm's length
US /kiːp ˈsʌm.wʌn æt ˈɑːrmz ˈleŋθ/
UK /kiːp ˈsʌm.wʌn æt ˈɑːrmz ˈleŋθ/
1.
距離を置く, 親しくしない
to avoid being very friendly with someone
:
•
She always keeps everyone at arm's length, even her closest colleagues.
彼女はいつも、親しい同僚でさえも距離を置いている。
•
After their argument, he decided to keep her at arm's length.
口論の後、彼は彼女と距離を置くことにした。