地球科学
科普利
Many more Copleys are on view, often portraits of early American statesmen, as well as Gilbert Stuart's studies of George Washington.
ECONOMIST: Art of the Americas
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。