单词:slow neutron filter
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[00:00.00]It's quite easy,isn't it? [00:03.10]Do you want to make one? [00:05.07]Sure.I'll get some paper, [00:07.32]colour pencils and scissors. [00:10.00]Good.Then we can take our planes [00:12.30]to the park and fly them there. [00:15.14]I think m
by Mignon Fogarty People often ask how to use ellipses, those little dot-dot-dots you often see in e-mail messages. For example, Mitra from Michigan asked, When is it appropriate to use '...' in writing? People use it all the time, and it seems like
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