常見例句雙語例句In particular, this planetary nebula exhibits a curious "S"-shaped profile, with a central bar that is most likely the projection of an inner ring of gas discharged by the star, seen edge on.尤其是這個星雲(yún)形成了奇特的S型外觀，而位於中央的恒星很可能就是激發(fā)周圍氣躰放電的那顆白矮星。www.astronomy.com.cn 返回 star-shaped projection