网站首页 汉语 德语 英语
A form of rocket construction in which the engines are positioned at the front end.
1930s; earliest use found in Discovery: a monthly popular journal of knowledge.
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。