1 B1 慣用的 カジュアル
たいてい無意識に、周囲への注意がなくなって頭がぼんやりした状態になる
"I totally zoned out during the last half of the meeting and missed the key points."
“
I zone out a lot. I'm not the most attentive person.
— Ellen DeGeneres, The Ellen DeGeneres Show (various episodes, widely quoted)
分離不可