点击下方单词,选择对的这个单词
noun
1. the distance that light travels in a vacuum in 1 year[…]nbsp;[…]nbsp;[…]nbsp;[…]nbsp;5. 88 trillion miles or 9. 46 trillion kilometers
[…]nbsp;[…]nbsp;[…]nbsp;[…]nbsp;Synonym: light year
多通过句子记忆单词,而不是单独死记硬背。