/fɜ:m ||; fɝm/adj1 able to stay the same shape when pressed; quite hard 受压后不变形的；坚固的；坚硬的: a firm mattress 坚硬的床垫firm muscles 坚实的肌肉
2 strong and steady or not likely to change 稳定的；坚定的: She kept a firm grip on her mother's hand. 她紧握着她妈妈的手。a firm commitment/decision/offer 坚定的承诺╱决定╱提议
3 firm (with sb) strong and in control 强有力的控制着:
He's very firm with his children. 他管孩子管得很严。You have to show the examiner that you have a firm grasp (= good knowledge) of grammar. 你要向主考表明，你的语法掌握得很好。 ➔firmly adv ➔firmness noun [U] a firm hand strong control or discipline 严格的约束；严明的纪律:
Those children need a teacher with a firm hand. 那些孩子需要有个管得严的老师。