Definition

Examples

• 科学家用光年来测量星星之间的距离。
  Kēxuéjiā yòng guāng nián lái cèliáng xīngxing zhī jiān de jùlí.
  Scientists use light-years to measure distances between stars.
• 离我们最近的星星有四光年多。
  Lí wǒmen zuì jìn de xīngxing yǒu sì guāng nián duō.
  The nearest star to us is over four light-years away.
• 一光年大约是九万四千六百亿公里。
  Yì guāng nián dàyuē shì jiǔ wàn sì qiān liù bǎi yì gōnglǐ.
  One light-year is about 9.46 trillion kilometers.