In other words more sealed boxes passed through the border than were received at the center.

It's a sealed black box that can't be modified.

It is a sealed black box that cannot be modified.

Find the sealed box - and the killer who owned it!

It wouldn't do to chuck the sealed box from the window.

The Shadow had come to claim the sealed box.

Whoever discovered The Shadow would find the sealed box with him.

Belver pointed to the sealed box that lay on the desk.

After three days the plates were placed in a light sealed box at the same temperature conditions.

We dragged the sealed box out into the morning light.