香港閱讀城 - Smart Mathematicians Upper Primary-09 Visitors From Planet Jupiter
Smart Mathematicians Upper Primary-09 Visitors From Planet Jupiter
出版日期:
09/2016
叢書:
Smart Mathematicians
It takes Earth about 365.25 days or a year to make a complete orbit around the Sun. Every fourth year is called a leap year due to an extra 0.25 day, making the leap year 366 days.
版面:
固定
關鍵字詞:
數學
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