A hard drug typically refers to a substance that is considered extremely addictive and associated with serious health risks and legal consequences. Examples of hard drugs include heroin, cocaine, and meth. These substances often have strong mood-changing effects and can lead to physical and psychological addiction. Their use can cause serious health issues such as overdose, infectious diseases from needle sharing, and mental health disorders. Because of their potential for abuse and harm, hard drugs are usually illegal in most countries.

“hard drug”的英语定义和含义

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