例句與造句

1. The combination of very large radio flux and exceedingly small angular size means that the sources have a fantastic surface brightness .
   極大的射電流量同極小的角經(jīng)集于一身，意味著這些發(fā)射源有難以置信的高表面亮度。
2. It's difficult to find surface brightness in a sentence. 用surface brightness造句挺難的