The inner and outer pairs of tubes were joined to form two double-walled water jackets.

In several species, the three outer pairs of the tail feathers are broadly tipped white.

There are four tracks through the station with platforms alongside the outer pair.

As their leader began to circle overhead like a buzzard looking for breakfast, the outer pair turned away north and south and kept on going.

The only other difference was the removal of the outer pair of wing bomb shackles.

The goal consisted of an inner and outer pair of posts.

The outer three pairs have long white tips.

The center of these drove; the others, an outer pair, could be raised to allow the machine to "coast like a bicycle".

An alternating current is applied to the outer pair of the electrodes.

Similarly, the outer pair of parentheses maintain correct order of operation.