专心致志地用英语怎么说？

专心致志地

例句

• The student is engrossed in his book. 这名学生正在专心致志地看书.
• Delegates sat in rapt silence as Mrs Fisher spoke... 费希尔夫人发言的时候，代表们都一言不发专心致志地听着。
• Soon, he was immersed in legal briefs. 很快, 他就专心致志地阐读诉讼摘要了.
• My father buried his head in his newspaper... 我父亲专心致志地看他的报纸。