When the first elephants appeared about 40 million years ago
the first bicycle appeared about two hundred years ago.
英语翻译1.dinosaurs first appeared about 230 million years ago 2
About fifty years ago, when television first came out, peopl
It was nine years ago,when I went to the UK for the first ti
英语翻译The Chinese first made paper about 2,000 years ago.China
it was about 20000years ago that the Chinese first made pape
It was about 600 years ago that the first clock with a face
it was two years ago when i first saw the great wall
60 million years ago,the earth was eaten翻译
four hundred years ago,the number was ______ 50 million
three hundred and senventy-five million years ago,the weathe
When her husband died about three years ago,the she thought