弱 相互 作用
作用 Kanji
弱 Kanji
6月末に参加者を募ったら1週間弱で約500席が予約でいっぱいになった。 When participants were sought at the end of June all, about 500, seats were reserved in under a week.
相互双 Kanji
それは相互理解の欠如がもとになっていると思う。 I think that is based on a lack of mutual understanding.