this's relativity什么意思

this's relativity什么意思 the restricted theory of relativity什么意思 law of relativity什么意思啊? Einstein's theory of relativity proved____为什么是correct而不是correctly 广义相对论里对宇宙论里的红光位移的解释与多普勒仪效应有什么不同?how does general relativity's explanation of cosmological red-shift (of distant galaxies) differ from the doppler effect? theory of relativity是什么意思 theory of relativity是什么意思 linguistic relativity是什么意思 theory of relativity是什么意思 theory of relativity是什么意思 What's this?This is a ruler.这句有什么错误, What's this in English什么意思 what's this in english表示什么 life.What's this? 什么意思 what's this/that?用什么答 She was seven s this term.s后面填什么? -What's this?-It's _____ arm.(填什么） Thiss Alan and thats Jim.有什么错