... 三层挤出机 triple extruder 一级导体 first class conductor 双辊式机架 double-hellogh stand ...
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... fire point 燃点 first class conductor 第一类导体 first harmonic 第一谐波 ...
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Once, I mistakenly found myself in First Class, where the conductor had a go at me.
BBC: News | UK | Commuting: A lottery for the visually impaired
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