一些航空公司开始提供碳补偿，包括维珍航空和大陆航空，二者分别位列绿色评级机构Greenopia最近评出的绿色航空的一二位。
Some carriers offer them, including Virgin and Continental, which ranked first and second respectively in Greenopia’s recent rankings of “greenest airlines”.
现在我们开始，一二，开始。
下礼拜一二我还有点事情，礼拜三开始我就都有空了，下下个礼拜以后，我就可以在你这里正常上班了。
I still need to settle something on next Monday and Tuesday. I shall be free from Wednesday onward and could start working in your office the week after next week.
建立蒙古帝国的成吉思汗一二○ 七年开始进侵西夏， 但要攻取一座宏伟城堡的时候， 发觉骑兵派不上用场。
Genghis Khan, founder of the Mongol Empire, began his invasion of Hsi Hsia in 1207. He soon learned the futility of using cavalry when he tried to take a mighty fortress.
建立蒙古帝国的成吉思汗一二○ 七年开始进侵西夏， 但要攻取一座宏伟城堡的时候， 发觉骑兵派不上用场。
Genghis Khan, founder of the Mongol Empire, began his invasion of Hsi Hsia in 1207. He soon learned the futility of using cavalry when he tried to take a mighty fortress.
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