When John was asked to star in a movie,he leaped at the opportunity.

当约翰被邀请主演一部电影时，他欣然接受了这机会。

leap at欣然地接受，急切地抓住。单独leap有跳，迅速行动的意思，jump at都有同样的意思。

John leaped at the offer to work overseas.

约翰欣然地接受了到海外工作的机会。

He jumped at the job.

他欣然接受了这份工作。