In the lecture, the professor discusses/argues/demonstrates *** in several points/aspects
First, he says that
and he gives an example of
Second, he mentioned that
and he shows some data/researchs about
Finally, he discusses that
(编辑：Sally)
In the lecture, the professor discusses/argues/demonstrates *** in several points/aspects
First, he says that
and he gives an example of
Second, he mentioned that
and he shows some data/researchs about
Finally, he discusses that
(编辑：Sally)