visual comparison短语⁷⁹⁷⁹¹ 基本例句 视觉比较 By chance, one of the background galaxies, IC1296 at the upper left, is close enough to show its barred, spiral structure making an attractive visual comparison with M57. 其中一个背景星系 IC1296在左上角，很清楚可以看到棒状及漩涡状的结构，可以跟漂亮的 M57互相辉映。 www.astronomy.com.cn