Why is a soap bubble round?

为什么肥皂泡是圆的？

Lose easily just like the soap bubble.

象肥皂泡一样容易破失。

The soap bubble popped after a few seconds.

肥皂泡在几秒钟以后就破裂了。

The bubble would look like a soap bubble with them inside of it.

看起来就像他们置身于一个肥皂泡当中。

The soap bubble is going with the wind and transforming magically.

肥皂泡一直被风吹着，奇妙地变幻着。