Definition: doing a job seriously and with a lot of effort Level: B2
我的同事特别勤奋，总是能按时完成任务。
My colleague is exceptionally ___hard-working and always meets deadlines.
要在这个职位上取得成功，你需要勤奋且努力。
To succeed in this role, you need to be diligent and ___hard-working.
团队的勤奋态度是项目成功的关键。
The team's ___hard-working attitude was key to the project's success.
