访问学者

zài niú jīn dà xué dāng fǎng wèn xué zhě shí tā yǒu xìng huì jiàn le bù shǎo dà kē xué jiā

在牛津大学当访问学者时，他有幸会见了不少大科学家。

During his stay at Oxford University as a visiting scholar, he had the honor to meet quite many great scientists.