opioid

"After a challenging day at work, Sarah felt a surge of endorphins, which helped her relax and feel better. "

"The scientist carefully examined the substance to determine its chemical composition. "

"The similarities between the two sisters were striking: they both had the same blue eyes and curly blonde hair. "

"My teacher asked for a response to the question, so I wrote an answer on the board. "

"The doctor prescribed aspirin."

"The science class experimented with different substances to see how they reacted to heat. "

"Many plants produce alkaloids, such as caffeine in coffee or morphine in poppies, which can affect the human body. "

"The effect of the hurricane was a devastated landscape."

"The teacher praised the students' similar answers on the math quiz. "

"He released his grasp on the lever."

"The scientist studied the properties of the synthetic fiber. "

""During the war, the refugees lived in guarded compounds for their safety." "