International Quiet Sun Year 国际宁静太阳年 ; 国际静太阳年
International Active-Sun Year 国际太阳活动年
sun spot eleven year cycle 太阳黑子年周期
The tilt of Earth's axis, toward the Sun at some times of the year and away from the Sun at other times, is responsible for the annual cycle of seasons.
地轴的倾斜在一年中的某些时候朝向太阳,而在其它时间远离太阳,造成了每年的季节循环。
A navigator can know the latitude of his ship by observing the location of stars, where the sun rises in the morning and sets in the evening, and what time of year it is.
VOA: special.2010.07.14
The Saints made the most of their first Super Bowl appearance in the team's 43-year history, overcoming an early 10-point deficit to upset the favored Colts at Sun Life Stadium in Miami.
VOA: standard.2010.02.08
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