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2013-05-23 12:21
求翻译：in 1939，people in the USA began to paint the school bus yellow 。in April of that year，dr ，frankw。cyr ，a professor at teachers collegeat columbia university，organized a meeting。he and other experts made national school bus standards at the meeting。 the color was color was chosen because black lettering on that bue was t是什么意思？ 待解决
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in 1939，people in the USA began to paint the school bus yellow 。in April of that year，dr ，frankw。cyr ，a professor at teachers collegeat columbia university，organized a meeting。he and other experts made national school bus standards at the meeting。 the color was color was chosen because black lettering on that bue was t
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