由于病了很长一段时间，她很虚弱，不能外出。
Having been ill for a long time, she was very weak and couldn't go outside.
从那以后，我很长一段时间都不想参加任何班级活动。
After that, I didn't want to join in any class activities for a long time.
话虽如此，很长一段时间里，我都不知道自己追求的是什么。
Having said that, I did not know for a long time what I was looking for.
例如，如果人们在一个嘈杂的场所工作很长一段时间，他们可能会失去听觉。
For example, people may lose their hearing if they work in a noisy place for a long time.
我们不停地喊救命，但是很长一段时间都没有人来帮助我们。
We shouted and shouted for help, but for a long time no help came.
一个大型空间站将建成，让三名宇航员生活和做研究工作很长一段时间。
A large space station will be built to allow three astronauts to live in and to do research work for a long time.
很长一段时间以来，一直有关于文化文明即将死亡的警告。
There's been a warning about the imminent death of literate civilization for a long time.
成功曾经被定义为能够在一家公司待很长一段时间，并在公司中步步高升。
Success was once defined as being able to stay at a company for a long time and move up the corporate ladder.
很长一段时间里，这些圆形的蓓蕾在美国本土的饮食上有着举足轻重的作用。
These circular buds have played an essential role in the Native American diet for a long time.
亚里士多德的观点持续了很长一段时间，但最终随着更多数据的出现，它开始瓦解。
The Aristotelian view held for a long time, but eventually, it started to crumble in the light of more data.
赌博永远是美国人生活的一个共同特征，但很长一段时间以来，它被广泛地认为是一种罪恶，抑或是一种社会疾病。
Gambling has been a common feature of American life forever, but for a long time it was broadly considered a sin, or a social disease.
尽管它的历史可以追溯到金字塔建造后的几百年，但它的复杂程度表明，埃及人可能很长一段时间以来一直在思考飞行的想法。
Although it dates from several hundred years after the building of the pyramids, its sophistication suggests that the Egyptians might have been developing ideas of flight for a long time.
除了良好的驾驶技术，对出租车司机来说最重要的就是要了解城市的街道。我很了解这座城市，因为我在这里住了很长一段时间。
Besides driving well, the most important thing a taxi driver needs to know is the streets, and I knew the city well because I had lived in it for a long time.
接下来是很长一段时间的困惑和混乱。
我做工作和领薪水之间相隔很长一段时间。
There is a long time lag between when I do the work and when I get paid.
我们出去休息很长一段时间，做做户外活动。
然而，女孩很惊讶，在注视我的眼睛很长一段时间后，她回答：“嗨”。
The girl was very surprised, however, after a long look into my eyes, she replied, "Hi".
在历史上很长一段时间里，人们都非常依赖马匹来进行货物贸易。
For a long time in history, people depended greatly on horses to trade goods.
经理和商人谈了很长一段时间，但当商人被问及建议时，他停顿了一会儿，然后说：“我没有什么建议可以给你。”
The manager and the businessman talked for a long period of time, but when he was asked for advice, the businessman stopped for a while and then said, "I have no advice to give."
事实上，还有另一种朋友，他虽然很长一段时间没有和我们在一起，但却会在某个时刻充满我们的心灵。
In fact, there is another type of friend—one that has not been with us for a long period of time, but fills our mind at some moment.
在很长一段时间里，没人知道火星是什么时候被发现的，谁发现的，也不知道有一种行星可以不用望远镜就能从地球上看到。
It's not known when Mars was found and by whom Mars has been known for a very long time, and one of the planets that can be seen from the Earth without a telescope.
我跑到肯欣顿花园，和仙子们住了很长一段时间。
I ran away to Kensington Gardens and lived a long long time among the fairies.
在收回开发费用之前，它们必须运作很长一段时间。
They have to operate for long periods of time before the costs of development have been recovered.
这一点可能更难实现，但要达到效果需要很长一段时间。
This one may be a bit more difficult to pull off, but it can go a long way to achieving results.
含油或醋的沙拉可以储存很长一段时间，而且不需要冷藏。
Oil or vinegar based salad can be stored for a long period of time without refrigeration.
每隔很长一段时间，他就用大拇指摸摸刀刃，满意地点点头。
At long intervals, he drew his thumb along the edge of his knife, and nodded his head with satisfaction.
除非它的质量真的很好，或者我认为它真的能让我用很长一段时间。
Unless it has really good quality, or I think it's going to last me for a really long time.
在那里，地下水在重新涌出地表之前，往往可以保存很长一段时间。
There it remains, sometimes for long periods, before emerging at the surface again.
很长一段时间，人们认为过去用来覆盖及保护小提琴的清漆是特殊的。
For a long time, people thought the varnish used to coat and protect the violins was special.
虽然很长一段时间里，该信件没有受到专业博物馆员工的维护，但是其状况良好。
The letter is in fairly good condition, in spite of being out of the care of trained museum staff for so long.
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