These are caused by reflection of light from the two sides of the thin film of water forming the bubble.

这些是由形成气泡的水薄膜两侧的光反射引起的。

The dough should come together into a smooth ball and you'll see a thin film form on the bottom of the pan.

面团应该聚集成一个光滑的球，你会在锅底看到一层薄膜。

Since making her debut in 1959, Parton has recorded more than 45 studio albums, appeared in a dozen films, formed her own production company and even opened a wildly successful theme park, Dollywood.

自1959年首次登台以来，帕顿已经录制了45张录音室专辑，出演了十几部电影，成立了自己的制作公司，甚至还开设了一个非常成功的主题公园——多莉坞。