不幸的是，没有医生指导或过量服用会对人体有害。
Unfortunately, harmful effects can occur when they are taken in excess or without a physician's supervision.
科学家发现富含淀粉的食物，例如土豆，被油炸后会对人体有害。
Scientists have found out that foods rich in starch, like potatoes, are harmful to your body when deep-fried.
事实上，这是非常不明智的大学生保持距离，因为从体育锻炼体育锻炼是不会对人体有害，但对他们好。
Indeed, it is very unwise for college students to keep distance from physical exercise because physical exercise is not harmful but good to them.
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