n. use of physical or mental energy; hard work
n. 努力, 成就
1. She put a lot of effort into her studies this year.
她今年在学习上付出了很多努力。
2. It takes effort to maintain a healthy lifestyle.
维持健康的生活方式需要努力。
3. His effort to help the team was greatly appreciated.
他帮助团队的努力受到了极大的赞赏。