Geocomposites are a combination of synthetic materials ordinarily used singly.

They may be used singly or with many to cover a larger area.

Both can be used singly, as a combined energy source, or in any sequence, to provide the ideal environment for varying food types.

The cars could be used singly or several coupled together in train sets and controlled from the cab of the front unit.

Doodlebugs sometimes pulled an unpowered trailer car, but were more often used singly.

The lines could very soon become entangled and this is a clear indication that line ferrets must only be used singly.

Others can be used singly or in combination with nourishment, driven by economic, environmental, and political considerations.

They may be used singly or blended with others.

They sometimes were used singly, but more often stacked in rows to provide some shade, at least for those not on top.

Both versions cane be used singly in the centre or asymmetrically up one side.