史密斯教授在大学里做了一场关于气候变化的鼓舞人心的讲座。

Professor Smith delivered an inspiring ___talk on climate change at the university.

参加那些学术讲座真的拓宽了我对这个课题的视野。

Attending those academic ___talks really broadened my perspective on the subject.

她受邀在国际会议上就她的研究发现做一次演讲。

She was invited to give a ___talk about her research findings at the international conference.