In "Mowing," the poem's lines are like sweeps of the scythe as it lays down rows of swale. Frost wants us to think about that.

在“割草“中字里行间就像是镰刀扫过,当它放倒一排排的麦子时，弗罗斯特想要我们仔细思考。

耶鲁公开课 - 现代诗歌课程节选

He invites us to hear the sweep of the scythe in those s sounds themselves, I think, and maybe even to hear the workers huff and puff, his rhythmic exhalation in the w's, which alternate and interact with those s's.

他让我们倾听镰刀扫过的声音,我觉得应该是这些s的发音上,也可能是听着劳动者的喘息声，他的有节奏的w似的发声，跟s音交替着互动。

耶鲁公开课 - 现代诗歌课程节选