I have been a faithful reader of your newspaper for many years.
我是贵报多年来的忠实读者。
This is the cause for which we have been struggling.
这就是我们一直为之奋斗的事业。
Many Asian countries have been using bamboo for hundreds of years.
许多亚洲国家使用竹子已有数百年的历史。
Some of her books have been translated into six different languages.
她的一些书已被翻译成六种不同的语言。
Bob and Jim have been good friends since they joined the same tennis team.
自从鲍勃和吉姆加入同一个网球队以来，他们一直是好朋友。
Spider webs are so amazing that engineers have been studying them for years.
蜘蛛网是如此神奇，以至于工程师们多年来一直在研究它们。
I have learnt with delight that you have been admitted to Tsinghua University.
我很高兴得知你被清华大学录取了。
Since the dawn of civilization, people have been curious about the age of Earth.
自从文明出现以来，人们就一直对地球的年龄感到好奇。
Paper-cuts of animals have been found in tombs which date back over 1,500 years.
人们已经在1500多年前的墓穴中发现了动物剪纸。
These two poems—possibly the first to have been written down in the Greek alphabet—had long been held up as literary archetypes.
这两首诗——可能是首次用希腊字母写下来的诗——长期以来一直被视为文学原型。
We have been at home, but I admire the healthcare workers who have risked their lives every day to help us stay healthy and safe.
我们一直在家里，但我钦佩医护人员，他们每天冒着生命危险帮助我们保持健康和安全。
As Anthony Hallam has pointed out, many scientific phenomena, such as the ice ages, have been accepted before they could be fully explained.
正如安东尼·哈勒姆所指出的，许多科学现象，比如冰河时代，在它们还没有被完全解释清楚之前就已经被接受了。
The wheels of change have been set in motion.
变革的车轮已经开始运转。
To avoid hurting the thousands of crested ibises that fly near one part of the railway, protective nets have been set up along the tracks to make sure the birds will not fly into a train.
为了避免伤害在铁路附近飞行的数千只朱鹮，铁路沿线已经设置了防护网，以确保这些鸟儿不会飞进火车。
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