They demonstrated the effects of earlier availability, lower costs, and/or higher efficiencies for more advanced equipment than the reference case.
Lower costs, better availability, and high efficiency was demonstrated by them.
Their demonstration proved only to increase costs and reduce efficiency.
We'll let him fish there unless there appears to be bad weather rolling in.
Is there any risk involved for you?
The kids pose for a picture.
The women and the man are sitting together quitely
A group of surfers trying to catch waves in the ocean outside.
A group of cops putting on gas masks.