北師大版高中英語模塊7--Unit 20 lessons3-3
[00:04.38]produced and helping to save the lives
[00:06.82]of millions.
[00:08.31]Despite the incredible outcome of his discovery
[00:11.08]Fleming remained modest.
[00:13.06]"Nature makes penicillin," he said,
[00:15.34]" I just found it."
[00:17.57]During the Second World War,
[00:19.26]when penicillin was first being used,
[00:21.48]the US Navy wre looking for ways
[00:23.19]of improving the accuracy of their missiles,
[00:25.98]but this was very complex.
[00:28.17]The navy turned to Eckert,
[00:30.38]an engineer, and Mauchly, a physicist,
[00:33.54]to produce a machine to do the job.
[00:36.08]Although they and their team did not finish
[00:38.21]the machine until after the war,
[00:40.42]in February 1946, it did not matter.
[00:43.49]This huge machine
[00:45.35]was the world's first computer.
[00:47.51]But it was nothing like our computers today.
[00:50.27]It measured 100 feet long by over 10 feet high
[00:53.57]and weighed over 30 tonnes.
[00:56.02]And with 18,000 tubes and 6,000 switches,
[00:59.49]it used so much energy
[01:01.14]that when it was turned on,
[01:02.83]the lights in the local town went out!
[01:04.43]
