| 例句 |
We have entered upon a new phase in history.我们已开始了历史的新纪元。He entered upon the new enterprise cautiously.他谨慎地开始了新的事业。She entered upon her duties as governess in a family.她开始担任家庭教师的职务。Once he had entered upon a question, he would never stop.他一旦着手考虑某个问题，就决不中途停止。 |