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英语单词
filter
C1高频 NGSL-3英 /ˈfɪltə(r)/美 /ˈfɪltər/
noun
过滤；筛选
a device containing paper, sand, chemicals, etc. that a liquid or gas is passed through in order to remove any materials that are not wanted
verb
过滤；筛选
to pass liquid, light, etc. through a special device, especially to remove something that is not wanted
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And so we have to—you know, people talk about the sort of great filters, the things that perhaps we talk about in the Fermi paradox: Where are the aliens?
因此我们必须面对——人们常提到的那些“大过滤器”，即费米悖论中探讨的问题：外星人究竟在哪里？
Elon Musk: A future worth getting excited about (TED 2022)
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