单词：radium dial
单词：radium dial 相关文章
[00:42.81]Lesson 1 1 Dialogue [00:48.46]Four doctors are at a medical conference. [00:53.32]A:Which speech are you going to listen to this afternoon? [00:58.36]B:I haven't decided.There's a talk on cancer that might be quite interesting, [01:05.23]so
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[00:02.25]第一单元 居里夫人 [00:04.49]Lesson 1 [00:05.97]第一课 [00:07.44]1 Dialogue [00:09.21]1 对话 [00:10.97]Four doctors are at a medical conference. [00:13.34]四个医生在医学会议上 [00:15.70]A:Which speech are you going to
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玛丽居里（Marie Skłodowska Curie，1867-1934年）世称居里夫人，全名：玛丽亚斯克沃多夫斯卡居里。 法国著名波兰裔科学家、物理学家、化学家。1867年11月7日生于华沙。 1903年，居里夫妇和贝克勒
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[00:39.99]1.Is it a good conference this year? [00:44.75]No,not as good as last year's. [00:50.81]2.Do you think speaker D will go to listen to a speech? [00:58.17]No,he's not going to any speech. [01:03.32]Instead,he's going out for a walk. [01:29.8
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Today the U.S. government keeps an eye on health and safety in the workplace. But that wasn't always the case. Americans workers can thank a little-known factory worker for sparking the sweeping changes that now protect them on the job. Worker traged
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MARY LOUISE KELLY, HOST: In the early days of the 20th century, radium factories in New Jersey and Illinois employed mostly women to paint watch faces and clock faces with luminous paint. The paint got everywhere - hair, hands, clothes. They were cal
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