我是蜘蛛侠的粉丝，我从高中时期开始，凡是蜘蛛人相关的英文杂志我无一不收集。
I am a fan of Spider man, and I started collecting the magazines when I was still in high school.
它在青年时期达到顶峰，在一段时间内趋于平稳，然后普遍会开始随着年龄的增长而缓慢下降。
It peaks in young adulthood, levels out for a period of time, and then generally starts to slowly decline as we age.
在同一时期，人类逐渐开始适应城市生活，目前有60%的人口分布在城市的纵深之中。
Within that same time frame, we evolved into an urban species, in which 60% of the human population now lives vertically in cities.
查尔斯从1990年开始敦促应对全球变暖的行动，说他从青少年时期就开始担心人类对环境的影响。
Charles began urging action on global warming in 1990 and says he has been worried about the impact of man on the environment since he was a teenager.
在大学时期，我曾在暑假打工，一开始在快餐店打工，后来去书店打工。
I worked in the summer holidays at the university, first in a fastfood restaurant, then in a book shop.
它开始于20世纪30年代大萧条时期，用来雇佣失业的艺术家。
It was started during the Depression in the 1930s to employ out-of-work artists.
"这本书将详细地介绍有关小冰河时期和其它气候变化的研究过程，但是，在我开始之前，让我先介绍一下历史背景。
This book will provide a detailed examination of the Little Ice Age and other climatic shifts, but, before I embark on that, let me provide a historical context.
唐宋时期，山水画开始流行。
Between the Tang and Song dynasties, landscape painting became popular.
我从九岁开始踢球，足球帮助我度过了困难时期。
I started playing when I was nine years old, and football got me through difficult periods.
直到20世纪80年代末，也就是苏联发射和平号空间站的时期，人们才开始在太空中居住更长时间。
It wasn't until the late 1980s when The Soviet Union sent the Mir space station that people began to live in space for a longer time.
在马斯特里赫特时期，回归开始了。
一件漂亮的路易十五时期的法衣开始拍卖了。
所以停滞时期便开始了。
我意识到我从来没有读到过某人某个时期开始的状态。
I realised I have never read an account of someone's period starting.
盐穹在过去干湿两季交替出现时期开始形成。
Salt domes start during past periods of alternating wet and dry climate.
从1868年明治时期开始，日本的人口持续增长了大约70年。
From the start of the Meiji period in 1868 Japan's population rose for about 70 years.
全球经济增长正处于自两年前复苏开始以来最疲软的时期。
Globally, growth is at its weakest since the recovery began almost two years ago.
夏至通常预示着一年最热时期的开始。
Xiazhi often represents the start of the hottest period of a year.
胎儿时期的心脏在怀孕后22天左右后开始跳动。
The embryonic heart starts to beat around the 22nd day of pregnancy.
这个时期大部分人都开始辞职——所以你就有更大成功的空间。
This is the time when others are quitting - so you'll have more room to succeed.
这触发了大学和学术界研究和开发时期的开始。
This triggered a period of research and development in the universities, or academies.
已知到了那个时期，地球就不再变暖了，而北半球开始形成冰山。
By that time warm climate conditions ended and the ice caps in the northern hemisphere developed.
也昭示着第二个SOA治理时期的开始。
芭芭拉·斯特·拉赫几年前开始进入老年时期。
Barbara Strauch started having senior moments a few years ago.
在低迷时期，资产价格开始下跌。
因而一些南非人开始忧虑和沉思一个后曼德拉时期。
It is thus with a certain wistfulness that some South Africans contemplate a post-Mandela era.
但是城市景观变化最大的一个时期是自从1949年开始。
But the single greatest period of change in China's cityscapes has been the era since 1949.
越战时期，麦凯恩自愿入伍，1966年开始执行轰炸任务。
Sen. McCain volunteered for duty during the Vietnam War and began piloting bombing missions in 1966.
越战时期，麦凯恩自愿入伍，1966年开始执行轰炸任务。
Sen. McCain volunteered for duty during the Vietnam War and began piloting bombing missions in 1966.
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