behavior
🇺🇸
/bɪˈheɪvjər/
🇬🇧
/bɪˈheɪvjə(r)/
how someone acts, especially how they treat others
The teacher noticed a change in his behavior.
教師は彼の行動の変化に気づいた。
how something works or reacts in a specific situation
The unusual behavior of the machine worried the engineer.
機械の異常な動作がエンジニアを心配させた。