Zhejiang Universiyt Tea Research Institute Key words: Tea plant, original place, origin center [gap=139]关键词：茶树；原产地；起源中心；
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primary origin center 原生起源中心
secondary origin center 次生起源中心
center of origin 起源中心 ; 源中心 ; 发源中心
theory of center of origin [遗] 起源中心学说 ; 起源中心说
Center on Origin 对齐坐标原点
center of origin of crops 起源中心
secondary center of origin [农学] 次级起源中心
center of origin of crop [农学] 作物起源中心
Our country is the center of the nature geography distributing of the clove, and is the origin center place for planting the clove.
我国是丁香属的自然分布中心，同时也是丁香栽培的起源中心。
I've used eight vertices (the cube's corner points) and placed the cube's center at the coordinate system's origin.
我在这里使用了8个顶点(立方体的顶点)并使立方体的中心与坐标系的原点相重合。
For example, take a disk center at the origin, well, the center of mass should be at the origin.
举个例子，取一个圆心为原点的圆盘，重心应该在原点。
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