Pellagra was virtually unknown at that time in the Americas, however, even among people who subsisted primarily on maize.
然而，糙皮病在当时的美洲几乎还不为人所知，甚至在主要以玉米为生的人之间也是如此。
From the Middle East the Chinese acquired a blue pigment—a purified form of cobalt oxide unobtainable at that time in China—that contained only a low level of manganese.
中国人从中东获得了一种蓝色颜料，这是一种当时在中国很难得到的纯净的氧化钴，这种颜料只含有少量的锰。
There was sad memory at that time in the diary.
日记里也有那时代发生的悲哀记忆。
At that time in every classroom of the school there was a big globe.
那时候，学校的每个教室里都有一个大大的地球仪。
At that time in Afghanistan, the principle of a chain of command was often ignored.
当时在阿富汗，一个指挥系统原则常常被忽视。
At that time in Florida, if someone died at home a deputy had to come and do a report.
那个年代，在佛罗里达州，如果有人在家里去世，代理人会来家里做记录。
At that time in Old English it was called not walrus but horschwael which we today might pronounce "horse whale."
在古英语的那个时代它不被称为海象，而是叫“horschwael”，今天我们也许应该发音为“豪斯维尔(horsewhale的音译)。”
That was my hobby, there was a bit of money, and at that time in Russia a hundred us dollars salary a month was good money, so I survived!
那是我的兴趣，钱虽然很少，但是那时在俄罗斯100美金一个月的薪水已经算是很富裕的了。所以我存活了下来！
Before 1997 WNV was not considered pathogenic for birds, but at that time in Israel a more virulent strain caused the death of different bird species presenting signs of encephalitis and paralysis.
在1997年以前，西尼罗河病毒并未被认为对鸟类具有致病性，但就在那时，以色列出现了一种能够导致多种鸟类出现脑炎和麻痹症状继而死亡的毒力更强的毒株。
At that time, the castle was in enemy hands.
那时城堡在敌人手中。
We were in the same college, which was male-only at that time.
我们当时在同一所学院，那时还是男子学院。
At that time, his virtuosity on the trumpet had no parallel in jazz.
那时，他高超的小号吹奏技巧在爵士乐界无人能比。
At that time being a woman was a bar to promotion in most professions.
那时在大多数职业中，身为女性就是晋升的障碍。
He promised that the boy would be back at school in time for evening prayers.
他承诺孩子会及时回到学校参加晚上的祈祷仪式。
You have to carry a pager so that they can call you in at any time.
你得带个传呼机，以便他们随时可以联系到你。
It's a blessing that nobody was in the house at the time.
幸好当时屋子里没人。
The wreck itself is a boat from Guinea or Liberia that hit a sandbank here at some time in the 1970s.
沉船本身是一艘来自几内亚或利比里亚的船只，在20世纪70年代的某个时候撞上了这里的沙洲。
The laugh at that time are triggered by surprise in a safe situation (think peek-a-boo), and don't just endear babies to their parents.
那时候的笑在一个安全的条件下，被一个个意外的情况引起（比如躲猫猫），不要让小宝贝们只跟他们的父母亲密。
The Great Pyramid was considered a unique building in the 19th century. At that time, it was still the tallest in the world.
大金字塔在19世纪被视为一座独特的建筑。在那个时候，它仍然是世界上最高的建筑。
I want to apologize for what I said to you yesterday because I was in bad temper at that time.
我想为我昨天对你说过的话道歉，因为那个时候我心情不太好。
Remember that the ranges of many animal species were different back then, so all these animals actually lived in the region at that time.
记住，当时许多动物物种的活动范围是不同的，所以所有这些动物实际上都生活在那个地区。
Must we face the thought that at some time in the distant future everyone will need to carry in their handbag or pocket one of the miniature calculators?
我们必须面对这样的想法：在遥远的将来，每个人都需要在他们的手提包或口袋里放一个微型计算器吗？
At that time we lived in a fire zone.
那时我们住在火区。
The researchers looked at time spent in a number of activities that could plausibly be driving the well-being decline.
研究人员观察了人们在一些活动上花费的时间，这些活动似乎是导致幸福感下降的原因。
Indeed, the purple colour extracted from a snail was once so costly that in society at the time only the rich could afford it.
的确，从蜗牛身上提取的紫色物质曾经非常昂贵，在当时的社会，只有富人才能买得起。
The humans who coexisted with these giant species in North America at that time were what we today called the Clovis Peopple.
当时在北美与这些巨型物种共存的人类就是我们今天所说的克洛维斯人。
The first Paralympic Games took place in 1948 in London with two British teams competing in an archery competition at that time.
第一届残疾人运动会于1948年在伦敦举行，当时有两支英国队伍参与了箭术的比赛。
Shelly Ann, who at that time only ranked number 70 in the world, beat Jamaica's unchallenged queen of the sprint.
当时世界排名只有70位的雪莉·安击败了牙买加无敌的短跑女王。
Shelly Ann, who at that time only ranked number 70 in the world, beat Jamaica's unchallenged queen of the sprint.
当时世界排名只有70位的雪莉·安击败了牙买加无敌的短跑女王。
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