Tropical year, and sidereal year are two different concepts.
回归年与恒星年是不同的两个概念。
Tropical year , and sidereal year are two different concepts .
在即回归年与恒星年是不同的两个概念。
The 4th tropical storm of the year, "Haima", has hit south China.
今年第四次热带风暴-“海马”袭击了中国南部。
The 4th tropical storm of the year, "Haima", has hit south China.
今年第四次热带风暴-“海马”袭击了中国南部。
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