Example sentences of "[vb -s] been known for [adj] [noun pl] " in BNC.
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1 | It has been known for many years that damage to the left hemisphere is more likely to affect language ability than damage to the right , suggesting that the left hemisphere is very important for language . |
2 | For example , it is still commonplace in cartoons to show cavemen and dinosaurs together , despite the fact that it has been known for many years that dinosaurs were extinct long before the evolution of ‘ cavemen ’ . |
3 | It has been known for many years that rich clusters contain a lot of gas and dark matter , but Ponman and Bertram 's result shows that these features apply more generally . |
4 | It has been known for many years that neurons , like other cells , can be maintained alive and well under such conditions for periods of many days or even weeks , provided they are kept warm , aerated and well fed with glucose and other essential molecules . |
5 | It has been known for many years that recycling used materials helps make great savings , but it was not until recently that it was realised how much good that it could do for the environment . |
6 | It has been known for some years now that records of the electricity activity of the brain during sleep — by electrodes attached to the scalp , face and neck — confirm that different types of sleep exist . |