请问time和period?56 such attacks were reported in the same time period the year before.time后面还放个period,用其中一个不就完了,用两个有什么不同的意思吗?

请问time和period?56 such attacks were reported in the same time period the year before.time后面还放个period,用其中一个不就完了,用两个有什么不同的意思吗? delivery time period是什么意思 关于periods of 和 a period of的英语问题periods of 和 a period of的意思是什么?例如periods of time he a period of time time period 的意思是什么? over a period of time time 与 period的区别 请问 blue period during the period 和over the period 英语翻译 over a period of time 是a period of time 还是times? 用...to take..(period of time)造句 Why silent for a period of time you owe me a period of time a seemingly endless period of time? 用...make...do...和...take to...造句用...make...do...和...take to...(period of time )造句 period what's the difference between'over a period of time'and 'during a period of time'? transition period和transitional period的区别?如题.