"专注而认真"可以用英文表示为"concentrated and serious"。
这个短语的来源可以追溯到拉丁文，"concentrated"一词来自拉丁文的"concentratus"，意思是"集中的"，"serious"一词来自拉丁文的"serius"，意思是"认真的"。
以下是一些英文例句和中文翻译：
She is a concentrated and serious student. 她是一名专注而认真的学生。
He always approaches his work with a concentrated and serious attitude. 他总是以专注而认真的态度对待工作。
The team needs to be more concentrated and serious if they want to win the game. 如果想赢得比赛，队伍需要更专注而认真。
这个短语的来源可以追溯到拉丁文，"concentrated"一词来自拉丁文的"concentratus"，意思是"集中的"，"serious"一词来自拉丁文的"serius"，意思是"认真的"。
以下是一些英文例句和中文翻译：
She is a concentrated and serious student. 她是一名专注而认真的学生。
He always approaches his work with a concentrated and serious attitude. 他总是以专注而认真的态度对待工作。
The team needs to be more concentrated and serious if they want to win the game. 如果想赢得比赛，队伍需要更专注而认真。