我在图书馆一本旧书的页边空白处发现了一些有趣的旁注。

I found some interesting ___marginalia in the margins of an old book at the library.

她只关注演讲的主要观点，忽略了页边那些不重要的批注。

She focused on the key points of the lecture and ignored the ___marginalia in the margins.