单词：motion detectors
单词：motion detectors 相关文章
It was becoming clear how the brave and expert thieves pulled off the world's biggest gem robbery. From a flight of stairs in the diamond center car park, they used a stolen key to open the door leading to the vault, and there they somehow managed to
自然百科2013年
An application, or app, developed by researchers at the University of California, Berkeley, has recorded nearly 400 earthquakes since it was launched in February this year. 加州大学伯克利分校的研究人员开发的一款应用程序，自今年
英语新闻
A: Hello. B: Hi, Betty. It's Larry. Can you tell me how many smoke detectors you have? A: There are two smoke detectors in my apartment. B: Do you know how new the batteries are? A: I'm very afraid of fires. I change the batteries every Labor Day. B:
地道英语对话-租房
A: Hello, Betty speaking. B: Hey, Betty. This is Larry. Tell me how many smoke detectors you have, please. A: This apartment came with one, and I installed another one. B: Are there fresh batteries in each of them? A: Each detector beeps when the bat
地道英语对话-租房
A: Hi, this is Betty. B: Hi, Betty. It's Larry. I need to know how many smoke detectors are in your apartment. A: There was one when I moved in. Then I added one. B: Do both detectors have fresh batteries? A: I always keep them fresh. I don't want to
地道英语对话-租房
63 火星的神秘运动 DATE=6-27-01 TITLE=SCIENCE REPORT - The Motion of Mars BYLINE=Mario Ritter (Start at 59
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