努力的英文英语怎么说

"努力"的英文是"effort"，来源于拉丁文"effortus"，意思是努力、费力。

例句：

He made a great effort to finish the project on time. 他努力完成项目。
She put in a lot of effort to improve her grades. 她努力提高成绩。
Their efforts to save the endangered species were admirable. 他们努力拯救濒危物种的努力值得称赞。