Thee first true primary red rose seen in Europe was "Slater's Crimson China" introduced in 1792 from China, where it had been growing wild in the mountains.

欧洲见到的第一枝真正的原色红玫瑰叫做“斯莱特中国深红”，于1792年从中国引进。当时，它一直生长在中国山区的野地里。

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During the air pollution red alert, the Beijing Commission of Education ordered all kindergartens, primary schools and middle schools to suspend classes.

在空气污染红色预警期间，北京市教委下令让所有幼儿园、小学和中学停课。

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The idea of primary colors, and specifically the idea of red, yellow and blue being the primary colors, didn't exist until about 200 years ago.

原色的概念，特别是以红色、黄色和蓝色作为原色的概念，是直到大约200年前才出现的。

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Three of these settings correspond to the primary colours red, green and blue, from which all other colours can be constructed.

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When Mr. Santorum began his run for president, Mr. Friess agreed to be a primary financier of the Red, White and Blue Fund.

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Other studies have shown that environments with red as one of the primary colors are conducive to good performance on short-term memory tasks.

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