1. But for ten years, while he continued to experiment with penicillin, his discovery was largely ignored by the medical world.
    以后的十年里，他继续做盘尼西林试验，但他的发现根本没有引起医学界的重视。

2. But the cause of malaria remained unknown to 17th-century medicine, and so there was investigation by experiment.
    但对于17世纪的医学来说，疟疾的起因仍属未知，所以便通过实验来进行调查。

3. But scientists were reluctant to experiment on human beings when the results could be so serious.
    但是科学家们不愿意用人来做实验，因为结果会很严重。

4. But there was a flaw in Ross´s experiment.
    但是罗斯的实验有一个缺陷。

5. The experiment needed careful observation.
    这个实验需要细心观察。

6. This brief experiment would dispel any further doubts you might have.
    这一简单的试验会消除你可能存有的一切疑虑。

7. The next logical experiment would have been to allow an infected mosquito to bite a healthy person.
    按照逻辑，下一个实验是让一个受到感染的蚊子去叮咬一个健康人。

8. The importance of this trait to success was shown in an experiment begun in the 1960s by Walter Mischel at a preschool on the Stanford University campus.
    有一个实验说明了这一特性对成功的重要意义。实验是20世纪60年代由沃尔特·米歇尔在斯坦福大学校园内的一所幼儿园里做的。

9. The interesting part of this experiment came in later years.
    多年以后，这一实验的引人之处出现了。

10. He tried the experiment again and again. Every time he got the same result.
    他反复做了这个试验.每次都得到同样的结果.