Many Americans say they will still contribute something to charity during the holiday season.

VOA: standard.2009.12.16

And if something within psychopathology I thought could contribute to our wellbeing, I took that and used that.

如果我认为精神病理学的内容能对我们的幸福有贡献，我会吸取并利用之。

哈佛公开课 - 幸福课课程节选

Bitter pride, chipper laughter Then silence, each waiting for the other to contribute something.

苦涩的高傲，爽朗的笑声,沉寂却随之而来,每个人都在等其他人说点什么。

耶鲁公开课 - 1945年后的美国小说课程节选