This can make judging difficult to follow for those new to showing until the subtle factors considered by the judge are better understood.

There are too many possibilities, and some of them rest on very subtle factors.

So researchers have begun exploring more subtle factors, like crime, pollution and family support.

Another more subtle factor is the relative speed at which the various faces of the crystal grow.

But there are other, far subtler factors influencing a student's choice.

There is an even more subtle, but important factor.

The whole thing depends on certain subtle factors of quark-quark interactions.

There is another, more subtle factor in this year's clash.

There are other subtle factors that have added to the economic distress.

Other more subtle factors may also have played a role.