Example sentences of "persist for many year " in BNC.
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1 | It can persist for many years . |
2 | We found that chronic constipation in young children can persist for many years . |
3 | It 's a help , but not a complete solution to the problem because once chlorine has been released in the stratosphere , it persists for many years and goes on destroying ozone . |
4 | The process of separation and demarcation was not a rapid one , and considerable ambiguity in the use of the term ‘ farrier ’ and ‘ farriery ’ persisted for many years after the establishment of the College , reflecting the degree to which the occupation of farrier and veterinarian overlapped . |
5 | The solvents persist for many years , and can take a long time to be degraded or removed ; the good news is that , unlike some other forms of pollution , spillages of volatile organochlorines are apparently becoming rarer as awareness of the consequences of poor practice increases . |