第三，更新了教材逻辑结构，把初中物理光学知识概括为“一个关系”，“四条规律”，“两个成像”；
Third, the logical structure of teaching materials is renewed, and "one relation", "four rules", and "two images" generalize the optical knowledge in junior high school.
而这类印刷机的成像速度不见得比单张纸的快，但因其可以采用两个印刷引擎，同时印刷卷筒纸的双面，所以效率更高。
These engines are not imaging any faster than the sheet fed engines in fact they are slower but use two print engines printing both sides of the web concurrently.
按照命名的不二法则，两个毫不相干的名词，如“皮肤”和“水果”组合在一起，不会给人留下任何印象。 只有组合成像“水果沙拉”这样有意义的词，人们才有反应。
As a branding rule of thumb, two unconnected nouns, such as “skin” and “fruit”, are entirely unmemorable unless they combine into something that makes sense, like “fruit salad”.
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