In the early stages, drug use is often hard to see.
早期，吸毒往往很少见。
It's also hard to find much right with a drug that elevates blood pressure, aggravates stress, causes insomnia and leads to addiction.
同样，另一种药会导致血压升高、加剧紧张、造成失眠，而且最终会上瘾，你就很难说它有什么好处。
It's hard to find much wrong with a drug that can battle fatigue and improve creativity and could even help prevent Parkinson's disease and diabetes.
如果一种药可以对抗肥胖，提高创造性，甚至还能有助于防止帕金森症和糖尿病，你很难说它有什么不好。
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