こたいきょり
個体距離
Personal space
45~120㎝離れている距離。どちらかが手を伸ばせば触ることができる距離のこと。
A distance of being separated by 45-120cm. A distance at which if 2 people are standing,and either of them stretches his or her arms, he or she will be able to touch the other person.