There is that physical comedy, and I'll suggest to you that in that sentence, the pushing and pulling, you're seeing part of Nabokov's verbal play.

有着强烈的肢体喜剧色彩，我认为在这句话中，反复出现的推和拉，想你展示了纳博科夫的文字游戏。

耶鲁公开课 - 1945年后的美国小说课程节选

Whereas pushing the fat man over is an actual act of murder on your part.

而反之，把胖子推下去则是你自己的直接谋杀行为。

耶鲁公开课 - 公正课程节选