Drugs are only approved after tests have demonstrated that they are relatively safe when used as directed and when their benefits outweigh their risks.
药物只有在试验证明它们是相对安全的情况，且其益处大于风险时，才会被批准使用。
But at least they have demonstrated that when companies get into trouble with the law, evidence of good character can win them a less costly punishment.
但至少他们已经证明，当公司触犯法律时，良好品行的证据可以为他们换来代价更低的惩罚。
Lots of experiments have demonstrated that people with music training can better differentiate certain sounds.
大量实验已经表明，受过音乐训练的人能够更好地区分某些声音。
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