可以使用英语表达 "improve oneself" 来表示提升自己。
"Improve" 是一个动词，意思是使变得更好，更有用或更健康。"Oneself" 是代词，指自己。因此，"improve oneself" 意思是让自己变得更好。
下面是一些英文例句及其中文翻译：
I'm trying to improve myself by learning a new language. (我正在努力学习一门新语言来提升自己。)
She spends hours every day practicing the piano to improve herself. (她每天花费几小时练习钢琴来提升自己。)
He's always looking for ways to improve himself both professionally and personally. (他总是在寻找方法来在职业和个人方面提升自己。)