caldwell 14造句

例句与造句

1. The "'Double Cluster "'( also known as "'Caldwell 14 "') is the common name for the open clusters NGC 869 and NGC 884 ( often designated h Persei and ? Persei, respectively ), which are close together in the constellation Perseus.
2. It's difficult to find caldwell 14 in a sentence. 用caldwell 14造句挺难的