Raw ground beef can harbor harmful bacteria that multiply rapidly when the meat's temperature is between 40 and 140 degrees Fahrenheit. For safety and to maintain freshness, never leave ground beef at room temperature for more than two hours. If the ambient temperature is above 90 F, do not leave it out for more than one hour.
Enhance is defined as to make something better or improve the condition of something. 1  An example of enhance is making the image in a photograph clearer. 2  An example of enhance is a woman using make up to bring out her eyes.
Performance-enhancing drugs are substances used to improve any form of activity performance in humans. In sports, the phrase performance-enhancing drugs is popularly used in reference to anabolic steroids or their precursors (hence the colloquial term steroids), anti-doping organizations apply the term broadly.erformance-enhancing drugs are used by athletes and bodybuilders. Use of cognitive performance enhancers by students is sometimes referred to as academic doping. They are also used by military personnel to enhance combat performance.