“first light”的概念、定义、翻译、参考文献-科学参考

单词	first light
释义	first light [¦fǝrst `līt] ^NAVIGATION The beginning of morning nautical twilight, that is, when the center of the morning sun is 12° below the horizon.
随便看	plumose plumose structure plum pocket plumule plunge plunge basin plunge grinding plunge point plunge pool plunger plunger jig washer plunger lift plunger overtravel plunger pump plunger-type instrument plunging breaker plunging cliff plunging fire plunging fold plural scattering plurilocular sporangium plus plus-90 orientation plush plush copper ore

科学参考收录了103327条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。