“tunnel portal”概念、定义、翻译-科学时代

单词	tunnel portal
释义	市政工程词汇手册 tunnel portal 隧道洞门，隧道口
随便看	celestial meridian celestial meridian celestial navigation celestial navigation system celestial observation celestial parallel celestial photography celestial photography celestial planisphere celestial polar distance celestial pole celestial pole celestial position celestial source celestial sphere celestial sphere celestial sphere theory celestial surveying celestial system celestial telescope celestine celestite celestite celestite celestolide

科学时代收录了1160609条科普词条，基本涵盖了常见科普常识及英语词汇的翻译，是科学学习和研究的有利工具。

tunnel portal