1969年,德国研究人员兼作家埃里希·冯·丹尼肯提出,这些线条是外星人为它们的飞机绘制的跑道。
One answer appeared in 1969, when the German researcher and writer Erich von Daniken proposed that the lines were drawn by extraterrestrials as runways for their aircraft.
线条是设计中有力的要素因为它能引导观众的眼睛。
A line is an effective element of design because it can lead the viewer's eye.
它色彩鲜活的线条是由八位绘图师在100的时间里创作的。
Its vivacious coloured line drawings were created by eight draftsmen over a period of 100 years.
In fact, you don't have to draw it this complicated way, you could just draw it as a line with and hanging off of it, and you would know that that's a DNA molecule four bases long.
实际上你不必画的这么复杂,你只要画几个线条并标明连接的碱基,别人就能知道它是含四个碱基的DNA
应用推荐