the upper crust

音標發(fā)音

Depths of these hypocenters concentrate at about 12km deep in the upper crust.
這些震源深度集中在地殼上部約12公里處。
Between the Kunlun fault and Yarlung Zangbo suture the eastward flow resulted in the formation of detachments in the upper crust.
在昆侖山脈與雅魯藏布縫合帶之間，向東的流動便形成上部地殼的滑脫構造。
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、下地殼分別發(fā)育大范圍的殼內低密度體，并處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