The light year is a unit of distance.

光年是距离的单位。

As a unit of distance, it's convenient for astronomers, but it's a terrible one if you're doing the Kessel Run.

文学家来说是很方便的距离单位，但如果你在做凯塞尔航行，就很糟糕。

A light year is a unit of distance not time.

光年是一距离单位而不是一时单位。

Traditional units of distance such as the Iranian Parasang reflected how a person could walk in a certain amount of time.

传统的距离单位，如伊朗的帕勒桑，反映的是一人在一定时的路程。

Scientists call this distance one astronomical unit, or AU.

科学家们将这距离定为文单位，或缩写为 AU。

They use a distance called the parsec (a contraction of parallax and second), based on a universal measure called the stellar parallax and equivalent to 3.26 light-years.

他们用的距离单位是“秒差距”基于一种普遍使用的、名叫恒视差的量度方法，相当于3.26光年。

You scoff, remembering that a parsec is a unit of distance, not time, when suddenly your ship powers down and a boarding party is beating down the outside hatch.

你嗤之以鼻， 记住秒差距是距离单位，而不是时，突然你的船停电了， 登船队正在敲打外面的舱口。