用upright position造句子，“upright position”造句

Material is highly resistant PVC material that provides a stable upright position on the surface in all wind and wave conditions.

Bring seat backs to the upright position and stow all tray tables.

Last week, the Hunley was rotated to an upright position for the first time since Abraham Lincoln was still breathing — how's that for old-school heavy metal?

Please put the back of your seat in an upright position.

Flora restored the heavy swivel chair to its upright position.

If you can hold the racquet in upright position ( racquet body never below your wrist) elbow close to your body you can be an efficient volleyer.

The water is dumped out into a pool, and then the empty bucket (because it is weighted at the bottom) tips back to the upright position and begins catching water again.