over last 50 years的意思?是超过五十年还是五十年内?原句：……WHAT NEW SUBSTANCE HAVE APPEARED OVER LAST 50 YEARS这是超过五十年的新物质还是五十年内的？？---------------------------------------------也就是说

over the last 50 years啥意思? over last 50 years的意思?是超过五十年还是五十年内?原句：……WHAT NEW SUBSTANCE HAVE APPEARED OVER LAST 50 YEARS这是超过五十年的新物质还是五十年内的？？---------------------------------------------也就是说 over the last three years什么时态? in the last few years=over the years吗 英文over the last two years 是“在过去的两年里”的意思吗 How has people’s leisure time changed over the last 50 years in your country? over the nest 100 years这个句出现时有没有时态的要求?in/over the last 100 years用现在完成时 over three years的同义词 over four years ago的over什么意思 over 100 years ago这里的over什么意思? over the years 的词性是什么 over the years 的中文意思是什么? over the last seventeenth centuries的翻译 英语翻译nature of work over the last 10 years.(Suggestion - do not leave gaps in time.) 用google,有道等翻译工具的靠边! 简单的同义句转换Lishui has changed a lot over the yearsThere_____ _____many_____in Lishui during the last years 还有 问一下 have 后面加 I 还是me Over the last 200 years,over harf () the trees on Earth have been cut down,填介词. She _____(learn)over 2000 Enlish words in the last few years.理由! Over the last few years a different path to success has become known.