Translation of "Sided" in Chinese

It was a one-sided love affair.

這是一場單戀。

That’s because inside, soap has two-sided molecules.

那是因为肥皂里面有两面分子。

I tried to draw a stick figure, but I failed when I started to draw the circle. It looked like a loop-sided oval.

我试图画条纹图形，但是当我画圆的时候我失败了。它看起来像一个椭圆的圆环。