he 1523造句

例句与造句

1. In 2007 she also discovered the red giant star HE 1523-0901 which is about 13.2 billion years old.
2. In 2007, a star in the galactic halo, HE 1523-0901, was estimated to be about 13.2 billion years old.
3. It's difficult to find he 1523 in a sentence. 用he 1523造句挺难的