Example sentences of "remain [adj] for long period " in BNC.
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| 1 | His view , however , is implicitly gradualist — ‘ a temporal progressive sequence of changes within an evolutionary lineage ’ — and there is no indication of the extensive palaeontological literature of the past decade suggesting an alternative punctuational view , that species may evolve relatively rapidly and then remain unchanged for long periods . |
| 2 | The identity , however , is converted into a theory of the determination of the price level by assuming : ( a ) that the money supply is determined by the monetary authorities ; ( b ) that the number of transactions is fixed in the short-run because of the classical presumption that the economy operates automatically at full employment ; and ( c ) that the velocity of circulation is also fixed in the short-run because it depends largely on institutional factors ( such as whether workers are paid weekly or monthly ) which themselves tend to remain constant for long periods of time . |
| 3 | Secretive , hard to flush , remaining motionless for long periods . |
| 4 | It was noted in 3.5 that long-term participant observation , as a consequence both of the relationship of trust which is built up and of a person 's inability to remain vigilant for long periods , has the effect of blurring the distinction between covert and overt observation . |
| 5 | At 3 ° C , feeding begins but the animals still remain immobile for long periods . |