But to someone with a trained eye who took a hard look, the problem was clear.

But now "everyone has to accept dollars, and a lot of people just do not have that trained eye," he added.

It didn't take more than a few seconds for their trained eyes to make the first guess, which they shared with a look.

His trained eye knew it had reached its final stage.

By the time he started taking his shirt off in public, they didn't look fresh except to a very trained eye.

A trained eye is necessary to distinguish the two species.

It was something a trained eye could spot at a glance.

To his trained eye, it was easy enough to see what had happened here.

But maybe their trained eyes had seen more than I realized.

Even in the darkness, his trained eyes could see it.