This design is in pastel colours with three rectangles and three triangles.这一设计由淡色的3个长方形和3个三角形构成。The open rectangles represent typical elements of the ion fluid.空心的矩形表示典型的离子流体元.Label the rectangles, and illustrate and de...
He received a doctorate of philosophy in political science at Columbia University.他获哥伦比亚大学政治学博士学位.I graduated first in my class in political science.我学政治,毕业考头等的.Bob is best remembered for his work in economics, jurisprud...