the upper crust

常见例句

Depths of these hypocenters concentrate at about 12km deep in the upper crust.
这些震源深度集中在地壳上部约12公里处。
Between the Kunlun fault and Yarlung Zangbo suture the eastward flow resulted in the formation of detachments in the upper crust.
在昆仑山脉与雅鲁藏布缝合带之间，向东的流动便形成上部地壳的滑脱构造。
Some low-density bodies widely exist in the middle crust of the center of the basin, and in the upper crust above the uplifted portion of the upper mantle.
位于盆地中部的中、下地壳分别发育大范围的壳内低密度体，并处于上地幔隆起的背景之上；

In the high Middle Ages, chess became a popular pastime for the upper crust, both men and women.
ECONOMIST: Women in chess
Schwab has the recently acquired Cybercorp for low-end day trading, Schwab for the masses and U.S. Trust for the upper crust.
FORBES: Charles Schwab, Version 4.0
Though he had always felt like an outsider, he was surprised by the viciousness of the attacks, losing 14 pounds and any illusions that he would be accepted by the upper crust.
FORBES: The World's Richest People