以下为句子列表：
英文: His most famous experiments, begun in 1889, demonstrated the conditioned and unconditioned reflexes in dogs, and they had an influence on the development of physiologically orientated behaviourist theories of psychology during the early years of the 20th
中文: 他很多著名的实验，开始于1889年，他用狗来做有条件反射和无条件反射的实验，这对生物学的发展有很大的影响，同时对二十世纪初的心理学理论发展方向有一定的影响作用。
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