16世纪和19世纪北也门成为奥托曼帝国的一部分；在一些时期，伊玛目控制了南也门。
By the 16th century and again in the 19th century, north Yemen was part of the Ottoman Empire, and in some periods its Imams exerted control over south Yemen.
在某些前哥伦布时期的印加社会中，一些团体从本土被派往遥远的热带森林或沿海地区，建立永久的卫星社区或殖民地。
In certain pre-Columbian Inca societies, groups were sent from the home territory to establish permanent satellite communities or colonies in distant tropical forests or coastal locations.
仅仅是在小学的一年里有一位优秀的老师，就会让学生们在青少年时期成为母亲的可能性降低一些，而上大学和在28岁时赚更多钱的可能性增加一些。
Just having a strong teacher for one elementary year left pupils a bit less likely to become mothers as teenagers, a bit more likely to go to college and earning more money at age 28.
在困难时期，总有一些民族英雄挺身而出，给人们带来希望。
In difficult times, there are always national heroes who step up and bring people hope.
但是，一些服饰专家们认为女孩的装束——高腰长裙，短头发，扁平的类拖鞋的鞋子——在奥斯汀的少年时期还并不流行。
Some costume experts, however, believe that the girl's outfit - empire-waist gown, short hair, flat, slipper-like shoes - didn't come into fashion until Austen was out of her teens.
在讨论问题的时期内确实发生了一些事情。
商业房地产的杠杆率较低一些，但在繁荣时期，它通常仍然能达到80%- 85%(如今在富裕世界中，新增贷款的这一比率已回到60% - 65%的水平)。
Gearing in commercial property was lower but in the boom years it still regularly touched 80-85% (it is now back to 60-65% for new borrowing in the rich world).
裴恩合她的同事们在他们的研究里发现，在睡眠时期，脑部的一些活动区域与情感、记忆的巩固加强有关。
Payne and her colleagues found in their research that some of the most active brain regions during sleep periods are those involved with emotion and memory consolidation.
美国的黑人较其他族裔在更短的时期内跨越了一些最高的障碍，达到了一个更远的距离。
Black Americans have come a greater distance, over some of the highest hurdles, in a shorter period of time than any other racial group.
虽然在洞穴里渡过漫长的冬天可能促使人们花时间从事壁画，但有一些推论认为这些符号的起源时间比这个时期更早。
Yet while long winters spent in caves might have induced people to spend time painting wonder walls, there are reasons to think the symbols originated much earlier on.
正如一些代表指出的，在流感大流行时期，国家卫生系统的能力大小，将在病况和生存方面造成极大不同。
As some delegates noted, the strength of a country's health system will make the biggest difference in sickness and survival during an influenza pandemic.
南部的一些王朝也在不同时期建成。
In the south, several dynasties prevailed during different periods.
伟大工作场所团队还会赞许一些，在困难时期仍能保持员工信任的公司。
The Great Place to Work group also wanted to honor companies that maintained employee trust during rough times.
在经济低迷时期，一些公司可能会试图向供应商施压。
In a downturn, some firms might be tempted to squeeze suppliers.
一些出版商还认为，大型书店可能走唱片店的老路，在音乐市场转向数字化的时期，唱片店一一倒闭。
Some worry that large bookstores will go the way of the record stores that shut down when the music business went digital.
这是吴哥在现在的柬埔寨快速衰退的一个时期，也是一些历史学家指责竞争者暹罗人和占婆王国入侵的事实。
This was the period when the city of Angkor in present-day Cambodia went into rapid decline, a fact that some historians have blamed on invasions by the rival Siamese and Champa kingdoms.
在撑起一些前经典时期(公元前600至300年)非常讨厌的松散填充物后，我们勉强在前方2米见方的一处继续挖了下去。
We managed to take the front 2-by-2-meter unit farther down after shoring up some very nasty loose fill from Preclassic days (600 to 300 B.C.).
这次房地产市场下降提出了问题：是否一些在繁荣时期修建的房屋会被卖掉。
That plunge raises questions about whether some homes built during the boom will ever be sold.
可以确定的是，新房的销售在衰退时期的确倾向于差一些，但是少和短期是有区别的。
To be sure, sales of new homes did tend to do a little worse during recessions, but the difference was small and short-lived.
因此，如果你得以一直集中精力读完本文，可能你会比在开始的白日梦时期更快乐一些。
So if you've been able to stay focused to the end of this column, perhaps you're happier than when you daydreamed at the beginning.
甚至在怀孕的最初时期，即妊娠早期，孕妇也会增加一些体重。
Even during the earliest part of your pregnancy, the first trimester, you will be gaining some weight.
这份名单涵盖了古代世界最引人注目的七个遗迹，它们中的一些在中世纪时期以前就已不复存在了。
The list comprised the seven most impressive monuments of the Ancient World, some of which barely survived to the Middle Ages.
目前，人们普遍认为，其他一些研究者或更早，或几乎在同一时期发现了青霉素。
There are several other researchers now credited with the discovery or parallel discovery of penicillin.
目前，人们普遍认为，其他一些研究者或更早，或几乎在同一时期发现了青霉素。
There are several other researchers now credited with the discovery or parallel discovery of penicillin.
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