| 释义 |
DEFINITIVE EXAMPLES 权威例句〔craton〕A large portion of a continental plate that has been relatively undisturbed since the Precambrian era and includes both shield and platform layers.稳定地块：一块大范围的大陆板块，从前寒武纪时代以来就一直是相当宁静的，包括盾状物和平台层美国传统〔scutcheon〕A shield-shaped object, such as a scute.盾状物：象盾牌状的物体，例如盾片美国传统 |