Example sentences of "[vb pp] [prep] a long period " in BNC.
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| 61 | What was less obvious was the effect on the system as a whole , which had evolved over a long period of time influenced by a variety of political and economical pressures , and not necessarily in a methodical manner . |
| 62 | If we find that magnets attached to cats will upset their ability to find their way home , then we are beginning , very dimly , to understand the amazing homing abilities that the animals have evolved over a long period of time . |
| 63 | This is seldom needed for analysis purposes but random access mode is often used where the records are held over a long period and have to be updated with the passage of time . |
| 64 | Such factors may include , for instance , a previous experience of loss which was dealt with badly , unresolved grief , past experience of failure , a lack of a sense of self-efficacy , a low self-esteem , a previous history of psychiatric disorder , and an absence of close relationships established over a long period of time . |
| 65 | All your behaviour , with the exception of those reflexes that were built into the system , has been acquired over a long period of ad hoc learning . |
| 66 | These real arts of the field man 's work can only be acquired over a long period , and they must be practised and refined by an officer on his own in the course of his work . |
| 67 | This technique was highly dangerous and required the skills that Cheshire had certainly acquired over a long period , but was equally within Gibson 's exceptional abilities . |