中国陆壳既有三分结构也存在二分结构；
Secondly, China continental crust has not only trisection structure but also dichotomy structure.
结果显示： 1。成就目标定向三分结构在大学生中是存在的、合理的。
The trisection structure of achievement goal orientation really exists in the college students, which is also reasonable.
栗嘴巨嘴鸟很大的喙占据了它身体的三分之一长度，但由于其为蜂巢式结构，它并没有看起来那么重。
The giant bill of the chestnut-mandibled toucan makes up a third of the bird's body length, but thanks to a honeycomb structure, it's not as heavy as it looks.
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