这是人类首次对蓝莓作用进行的试验研究。一系列试验表明，一群退休老人喝了12周蓝莓饮料后改善了他们记忆，重新回想起往事。
In the first such test on humans, the group of pensioners drank the juice over 12 weeks, which helped improve their memory and recall in a series of tests.
有试验证实，大象可以在1.5英里(2.5公里)的距离之外，分辩出象群中特殊个体的叫声。
Experiments have shown that elephants can recognize the voices of particular individuals at distances of up to one and a half miles (two and a half kilometers).
这不仅是因为阿司匹林的价格低廉，药物公司很难从它身上赚到钱，而且可能很难找到一群患有乳腺癌又愿意在试验期间准备从不服用阿司匹林的妇女。
Not only is aspirin so cheap it will not make any money for drug firms, it could be hard to find a group of women with breast cancer who were prepared never to take aspirin during a trial.
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