网站首页 汉语 德语 英语
Any compact celestial emitter of X-rays (not necessarily a star), such as an X-ray binary or an X-ray pulsar.
1960s; earliest use found in The Daily Telegraph.
雅致网英汉双解词典包含236457条英汉翻译词条，涵盖了常用英语单词及词组短语的翻译及用法，是英语学习的必备工具。