Gorbachev and Raisa descended together from their plane at Heathrow Airport.戈尔巴乔夫和赖沙一起从停在希恩罗机场的飞机上走下来.Gorbachev failed to keep the component parts of the Soviet Union together...戈尔巴乔夫没能把苏联各成员国团结在一起。In 1988 Mikhail Gorbac...
自由构形是超平面构形中一类重要的构形.Free arrangement is a very important kind of hyperplane arrangement.又, X中超平面为T—列闭当且仅当它为T~ -— 闭.Also, a hyperplane in X is Tsequentially closed iff it is T ~ - - closed....
We set off to see the Pyramids and Sphinx.我们出发去看金字塔和狮身人面像。The Great Pyramids and the Sphinx are nearby.雄伟的金字塔和狮身人面像就在附近.I. Comparisons to a Living Creature ( i . e . , the Sphinx riddle )1.比作某种生物 ( 如斯芬克司谜 )...