There's no physical attraction.

没有吸引力。

Is it physical attraction?

是身体的吸引力？

Physical attraction was one thing, love was quite another.

外表的吸引是一回事，爱情可就另当别论。

There will be mutual understanding and constant physical attraction.

有的则是相互理解和始终如一的身体吸引。

This is the physical attraction of unlike molecules for each other.

是指不同物体分子之间的物理吸引作用。