Image reversal of S - 1400 series photoresist from positive to negative has been realized by added proper imidazole in it.

本文阐术了在S-1400正胶中加入适量咪唑，使正胶不仅具有原来特性，而且经一定工艺处理后还具有负胶的功能。

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While the Inca people erected hundreds of stone structures there from the early 1400's, legends and myths indicate that Machu Picchu was a sacred place.

早在15世纪初期，印加人就在那里建起数百座石建筑，传说和神话表明马丘·比丘曾是一个圣地。

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But not only do we believe that, we have the science that teaches us how to read it as it's read 1400 years ago.

但是我们不仅仅相信，还有专门的学科,来叫我们怎样和1400年一样去诵读。

普林斯顿公开课 - 人性课程节选

I was like, "it's a castle from 1400." I was like, "America wasn't even built by 1400."

我想说“建于1400年的城堡。那时都还没有美国呢。”

英国与美国的差异 - SpeakingMax英语口语达人