例句與造句

1. This star is a red giant with a visual magnitude of 17
   這顆恒星是一顆紅巨人與一個視覺幅度17
2. Jupiter is the second brightest planet after venus . the visual magnitude of jupiter is around - 2 . 5 a few weeks before and after the opposition
   木星是除金星外最光亮的行星，木星沖前后幾星期，其視星等約為- 2
3. It's difficult to find visual magnitude in a sentence. 用visual magnitude造句挺難的