Neutrinos can thus escape from regions of space where light and other kinds of electromagnetic radiation are blocked by matter.
因此,中微子可以从光和其他电磁辐射被物质阻挡的空间区域中逃逸出来。
Then, about 7000 B.C., within the space of a few generations, they switched abruptly to herding domesticated goats and sheep and to growing einkorn, pulses, and other cereal grasses.
后来,大约在公元前7000年,在几代人的时间里,他们突然转向放牧家养的山羊和绵羊,转而种植单粒小麦、豆类和其他谷类牧草。
More than 750,000 have graduated from SAC(Space and Aviation Center), with many seeking employment in engineering, aviation, education, medicine and a wide variety of other professions.
超过75万人从航天中心毕业,其中许多人在工程、航空、教育、医学和其他各种专业上寻求就业机会。
Astronomers use the observatory to study the positions and movements of the Earth, sun,moon and other objects in space.
VOA: special.2009.09.21
But we also know there needs to be space for other conversations. In fact I think many of the conversations are that they have started on the community action trip that they might take as they enter freshman year or the outdoor action trip or other informal ways of making connections.
但是,我们也知道,他们也需要,进行其他对话的空间,实际上,我认为这些对话发生在很多活动中,比如说,学生们在大一时可能参加的,一些社区活动,或者是一些课外旅行,或者是其他一些娱乐交流活动。
Other reasons included a severe climate, and loss of living space and water to farm animals.
VOA: special.2010.06.22
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