The ability of coal to release a combustible gas has long been known.
煤能够释放易燃气体这一点早已为人所知。
It has long been known that the level of serum iron in animals falls during infection.
人们早就知道，在感染期间，动物的血清铁水平会下降。
It has long been known that a taxi firm called AAAA cars has a big advantage over Zodiac cars when customers thumb through their phone directories.
人们早就知道，当顾客翻阅电话簿时，AAAA汽车公司比Zodiac 汽车公司有很大的优势。
The Qinghai-Xizang Plateau has long been known as the roof of the world.
青藏高原素有世界屋脊之称。
In contrast, marriage has long been known to mellow men out.
相反，婚姻使男人变成熟则已久为人知。
It has long been known as the best car in the world.
长期以来它被认为是世界上最好的汽车。
It has long been known that there are 92 solutions to the problem.
很久以前人们就发现八皇后问题有92种解决方法。
Singapore has long been known as a global foreign exchange trading hub.
新加坡长久以来被视为国际外汇交易中心。
China has long been known as the factory to the world, and with good reason.
中国长久以来已世界工厂而闻名，这是名副其实的。
Paris has long been known for stylish people, delicious cuisine and universal health care.
巴黎一直因时尚、美食和全民医保制度而闻名于世。
It has long been known as ESP, Spider Sense, or the ability to see things before they happen.
第六感也被称为超感知觉、蜘蛛感应，也就是预知未来事物的能力。
Scenic Lake Como, with its deep blue waters, has long been known as "the looking glass of Venus."
科摩湖风景区及其深蓝色湖水，长期以来一直被称为“维纳斯的梳妆镜。”
It has long been known that green tea has the ability to kill bacteria and is known to deter food poisoning.
人们很久前就已经知道绿茶能杀菌和阻断食物中毒。
It has long been known that the hunting scenes depicted on walls were not simply a form of artistic expression.
描绘在墙壁上的狩猎场面，不仅是艺术的表现形式，这一点早为人们了解。
Sweden has long been known for having among the highest level of English language skills outside the Anglo-Saxon world.
瑞典一直以盎格鲁-撒克逊世界以外英语水平最高的国家而著称。
It has long been known that bitemporal hemianopsia is one of the typical manifestations in patients with pituitary tumours.
一百多年来，临床实践已经证实脑垂体肿瘤（或视交叉部病变）可以引起双颞侧偏盲的视野改变。
Vienna has long been known as having a very high quality of life, but it is a city that hasn't rested on its quality reputation.
维也纳长期以来就以拥有高品质的生活而著称，但它并未因此而松懈下来。
It has long been known that chopping Onions induces tears due to a volatile gas released by onion cells when damaged by the knife.
人们很早以前就知道，切洋葱时会熏到眼睛流泪，是因为被刀切到时洋葱细胞会释放出一种易挥发气体。
Darien Library has long been known for its "extreme customer service" and for making every Darien experience the best that it can be.
一直以来，Darien图书馆都以极致的服务闻名，它致力于为每一位顾客提供最好的体验。
The southern seaside city of Marseille has long been known as the gateway to North Africa, which lies just across the sparkling Mediterranean.
法国南部海滨城市马赛一直是人们熟知的通向北非的大门，她跟引人注目的地中海刚好隔海相望。
Honey has long been known as a natural antiseptic and can help destroy the bacteria in the oil glands quickly, helping to speed up the healing process.
蜂蜜一直被誉为天然的防腐剂，还可以快速的杀死油腺体里面的细菌，加速愈合过程。
Owner Alessandro Catenacci has long been known for running some of the city's top restaurants and clubs as well as providing catering to Sweden's royal court.
酒店老板阿里桑德拉·卡特南希(Alessandro Catenacci)早已闻名于世，因其经营着城里几家顶级酒店、酒吧，同时还为瑞典王室提供餐饮服务。
It has long been known that trees enhance rainfall by cooling the land, slowing wind evaporation and erosion, and transpiring water into the sky from their leaves.
长久以来人们就知道树木能提高降雨量，原理就是，树木使大地变得更凉爽，同时减慢风力蒸发和侵蚀，并使叶子上的水汽蒸发到空气中去。
That's a higher percentage even than Japan, whose demographic problem has long been known, and almost twice the percentage of the U. S. expected to be 65 or over in 2050.
这个比例甚至比素以人口老龄化问题闻名的日本还要高，是美国2050年预计65岁以上人口比例的近两倍。
But it has long been known that packaging plays a role in controlling wine chemistry and taste by absorbing some volatile compounds in a process known as "flavour scalping".
很久以来就知晓包装在控制葡萄酒化学物质和口味上有很重要的作用，主要是在“去味”过程中吸收一些具挥发性的化合物。
The former Song Dynasty capital, and now the capital of China’s Zhejiang Province, has long been known for its beautiful scenery, its fine silk and as the birthplace of Longjing tea.
杭州以前是宋朝都城，现为中国浙江省省会，以秀丽风光、精美的丝绸以及龙井茶闻名。
The former Song Dynasty capital, and now the capital of China's Zhejiang Province, has long been known for its beautiful scenery, its fine silk and as the birthplace of Longjing tea.
杭州以前是宋朝的都城，现为中国浙江省的省会，以秀丽的风光、精美的丝绸以及龙井茶闻名。
The former Song Dynasty capital, and now the capital of China's Zhejiang Province, has long been known for its beautiful scenery, its fine silk and as the birthplace of Longjing tea.
杭州以前是宋朝的都城，现为中国浙江省的省会，以秀丽的风光、精美的丝绸以及龙井茶闻名。
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