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His restrained direction keeps the brothers in check and underpowered.

Some have questioned the use of public funding to support cell therapy research for heart failure treatment, due to poorly designed or underpowered clinical trials and very modest improvements in cardiac function in preclinical studies that are not always substantiated in large-scale clinical trials.

On a really hot day, hovering over a riverbed in a broiling canyon, the underpowered machine acted a lot like a bigger, more powerful helicopter at higher elevations over a raging wildfire.

The Guardian's Peter Bradshaw wrote: "There are some nice touches and an attractive new diversity worn lightly, but this is an underpowered and uncertain film."

It’s a little underpowered — 245 horsepower — but comes up big with an EPA estimate of up to 36 mpg combined.