Example sentences of "[noun pl] have be known for " in BNC.
Next page| No | Sentence |
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| 1 | THE action of alkali metals and their oxides as promoters for many catalytic reactions has been known for nearly a century . |
| 2 | The toxic nature of some animals has been known for a long time and man has utilised their venoms and poisons for various purposes . |
| 3 | As members will be aware , the Local Government Regions and Districts have been known for some time , and the areas of the Sheriffdoms were published at the beginning of the year . |
| 4 | Although the existence of nitrate pollution and its health implications had been known for decades , in the UK it was not thought to be much of a problem until 1984 . |
| 5 | Other diuretics have been known for a long time , especially arsenical compounds of mercury . |
| 6 | The problem of toxics and blue-green algae had been known for a century in countries like Australia and the US where it occurred naturally . |
| 7 | Although the link between social deprivation and road accident casualty rates has been known for some time , the scale of the problem has not been assessed either nationally or locally . |
| 8 | The effect of early experience on the mating preferences of birds and mammals has been known for a long time . |
| 9 | The research has been done for some time and the results have been known for some time , yet still the Government do nothing . |
| 10 | Around forty of these drawings have been known for years from books and exhibitions , but as things are , I am the only person in the world at the moment to have complete knowledge of what that collection was in its entirety . |
| 11 | These letters have been known for some time , as the aggrieved Leone published them in a pamphlet in 1764 . |
| 12 | But we know very little about the animals which bore these scales and although a few articulated remains have been known for several years , they show very little anatomical detail and it is not easy to identify immediate relatives . |