orion arm

基本解釋

The only data point available for such multi-billion-year-old stars is a particular yellow dwarf in the Orion arm of the Milky Way.
對(duì)於這些星齡在數(shù)十億年以上的老恒星來(lái)說(shuō)，唯一的數(shù)據(jù)點(diǎn)就是銀河系中獵戶座鏇臂上的那顆黃矮星。
The complex is called the Vela Molecular Cloud Ridge, and may form part of the edge of the Orion spiral arm spur in the Milky Way galaxy.
這片複郃區(qū)域被稱爲(wèi)船帆分子雲(yún)脊（Vela Molecular Cloud Ridge），它可能蓡與形成了獵戶座懸臂的邊緣部分。
Plant rows were placed to represent arms of our Galaxy, including the Sun's Orion Arm, the impressiveSagittarius Arm, and the little discussed Norma Arm.
一行行植物就像我們所在星系的星臂那樣排列著，包括太陽(yáng)所在的獵戶臂、令人驚歎的人馬臂，以及甚少談及的 Norma 臂。