upper crust

<口>上流社会,贵族阶级

同：	[n.] upper class

In general, the composition of lower crust is close to basalt and the composition of upper crust is similar to granite.
一般来说，下地壳的成分接近于玄武岩，而上地壳的物质成分与花岗岩相似。收藏
The assumption of stationary conditions must be dropped, if we consider the influence of intrusions of hot magma into the upper part of crust
如果我们考虑热岩浆侵入地壳上部所造成的影响，则稳定态条件的假设便不成立。收藏
Belong to the upper crust
属于上流社会.收藏

the class occupying the highest position in the social hierarchy
[同] upper class, upper crust

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