V2EX swing-by

Swing-by

释义 Definition

swing-by(短语动词/名词)

  1. (口语)顺路短暂拜访、顺便过去一下(通常停留时间不长)
  2. (航天)飞掠/引力助推:航天器“掠过”行星或天体,借其引力改变速度或轨道(也常写作 swingby 或称 gravity assist

发音 Pronunciation

/sw ba/

例句 Examples

I’ll swing by your place after work.
我下班后顺路去你那儿一下。

If you swing by the office later, could you drop these files on Sarah’s desk before the meeting starts?
如果你稍后路过办公室,能在会议开始前把这些文件放到莎拉的桌上吗?

词源 Etymology

swing 原意有“摆动、转动、转向”之意,搭配介词 by(“经过、路过”),在口语中逐渐固定为“转过去一下、顺路到访”的表达;在航天语境里,“转向经过”进一步专门化,用来指航天器掠过天体并改变轨道/速度的机动方式。

相关词 Related Words

文学作品 Literary Works

  • Andy Weir《The Martian》(《火星救援》)(含大量口语对话与航天语境表达,常见 “swing by” 这类口语短语的用法)
  • Neal Stephenson《Seveneves》(《七夏娃》)(以轨道力学与航天工程为核心主题,相关术语语境中可能出现 “swing-by/ flyby” 类表述)
  • NASA 任务新闻稿与科普资料(如行星探测任务说明中,常用 swing-by / flyby / gravity assist 描述引力助推与飞掠机动;不同文档版本用词可能略有差异)
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