The bulk of the mass is spread out, forcing stars to trace a Spirograph-like rosette: an ellipse that does not close on itself but gets offset each time the star completes one revolution[ see box at right].
英
美
- 整體質(zhì)量分散開(kāi)來(lái)，迫使恒星運行方式如旋轉繪圖盤(pán)所畫(huà)出的花瓣狀螺線(xiàn)：那不是每圈都會(huì )封閉起來(lái)的橢圓，恒星繞行一周后，軌道并不接合便又重新開(kāi)始下一周的運動(dòng)（右方〈理軌道秩序〉。
