Surfactants with ionizable heads are key to creating a repulsive force that counteracts the van der Waals attraction and thus stabilizes a soap film.

具有离子化头的表面活性剂是产生排斥力的关键，这种排斥力可以对抗范德瓦尔斯力，从而使的一个肥皂泡薄膜稳定的存在。

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The new film is based on a book of the same name by Bryan Burrough, who says the FBI's pursuit of Dillinger and co - who all earned the title "public enemies" - became a "national soap opera".

这部电影改编于布莱恩·巴罗的同名小说，他说，FBI追捕被誉为“全民公敌”的迪林格及其同伙的事件已成为了“全国性的肥皂剧”。

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Shampoo foam stability is thus promoted by an electrostatic double-layer repulsion of opposite sides of the soap film between neighboring bubbles.

因此看来，洗发水泡沫的稳定性来自于相邻泡泡对立面的双层静电斥力。

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