No reference to their existence appears in any literature of the period.
该时期的任何文献中都没有提及他们的存在。
We can find out how much money is spent on food in any given period.
我们可以查明在特定时间内花在食物上的钱有多少。
So you can look up any word you meet in your Senior period.
所以，你可以查找任何单词你在高中期间举行。
Today's society benefits more from ceramics than in any other period.
今天从陶瓷获得的社会福利，比在任何其他时期都多。
The utility model is suitable for the pregnant woman in any pregnant period to wear.
本实用新型适用于任何妊娠期的孕妇穿用。
Currently, men and women must take any parental leave in one continuous period.
目前，男人和女人必须在一个连续的期间请育儿假。
The world is burning more coal today than at any period in history.
如今全世界燃烧的煤比历史上任何时期都多。
Have there been any gaps in time between your last period of study and now?
您最近一次的学习距今是否有间隔？
Have there been any gaps in time between your last period of study and now?
您最近一次的学习距今是否有间隔？
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