In a later phase an outer skin (2m wide) was added, making the wall a total of 4m thick.

At the same time, he heard the sound of scratching on the shuttle's outer skin.

Once cool enough, the outer skin should be rubbed off.

The outer skin is tougher and thicker than you might think.

The outer skin might be seared, the men on it killed.

The chief pressed his head back against the outer skin of the station.

There was an access panel on the outer skin of the satellite.

The main force of the explosion had been spent in ripping her outer skin.

"The people I met in the investment community are not comfortable with my outer skin."

All were now outside it, on its outer skin.