Warning: file_put_contents(/www/wwwroot/zidian/biehu.cn/cache/bc1f90ac3581ca48dd7e1186fb869773.txt): failed to open stream: No space left on device in /www/wwwroot/zidian/biehu.cn/index.php on line 58 planetesimal hypothesis英英字典_planetesimal hypothesis剑桥英语解释_planetesimal hypothesis柯林斯英文解释_甲百匯小鸡词典
1. N the discredited theory that the close passage of a star to the sun caused many small bodies (planetesimals) to be drawn from the sun, eventually coalescing to form the planets 星子假說