单词	double refraction
释义	double refraction noun : birefringence sense 1 Example Sentences Recent Examples on the Web Now, Száz and Horváth have run 36,000 simulations to see how ships would have fared using the crystals, which are most well-known for their property of double refraction (anything viewed through Icelandic spar is seen twice over). David Grossman, Popular Mechanics, 4 Apr. 2018 Word History First Known Use 1794, in the meaning defined above
随便看	firewalks firewall firewalled firewalling firewalls firewater firewaters fireweed fireweeds firewheeles firewheels firewoman firewomen firewood firewoods firework fireworks fireworm fireworms firing firing (at) firing (up) firing at firing away firing data

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