东航一架以世博为主题的彩绘飞机12日在上海虹桥机场首度亮相，迎接13日2010年上海世博会开幕倒计时200天。
China Eastern Airlines unveiled an aircraft painted with patterns of the 2010 Shanghai World Expo themes Monday at the city's Hongqiao Airport to mark Tuesday's 200-day countdown to the event.
“紫菜（nori）”一字指的是紫菜类（紫菜属藻类的食用物种）以及从切丝海藻制成的薄的脆片。 自17世纪以来，紫菜一直在日本近海海域浅大陆架栽植。
Nori has been cultivated in sheltered, shallow offshore waters of Japan since the seventeenth century.
上新世和第四纪主要为浅海陆架及半深海充填沉积。
There were mainly neritic shelf and bathyal filling sedimentation in the Pliocene and Quaternary.
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