He begins this speech, which was tape recorded in Cambridge shortly before he died -- he begins by explaining how science works through the testing of hypotheses that are framed to be vulnerable to disproof, and then he goes on.
他开始这段在剑桥录下来的演讲， 在他死前不久。 他通过解析科学怎样通过测试各种各样的猜想而运转 而这些猜想都是建立在容易被反证的基础上的，他接着说，