some four years later 跟four years later有什么不一样?

some four years later 跟four years later有什么不一样? four years Four Years four years,over Four Years Old 歌词 four years before two years late Bob is seeing some friends _________in four years .（BOB在4年后第一次见了一些朋友） every four years代表什么 every four years什么意思? some students were late some students were late four-year 和four years有什么区别? Some years ago, The Olympic Games are heldA every four years B every four year C every fourth years D every four-years every four years的同义词组 for over four years是什么时态 four years ago翻译成中文是什么意思?