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Assume that.......................... These assumptions call attention to....................................................... On the other hand.................................. It is safe to say that................................... In order to go more thoroughly into this problem............................................ It is essential for.................................... In addition to............................... As mentioned above............................................ It is necessary to determine here.................................................... It should be stressed here....................................... Here is an illustrative explanation of................................................................. Previous investigations show..................................................................... From the viewpoint of........................................................ Perhaps it will be polemic to......................................................... In this sense I would like to emphasize............................................................. I would like to raise some questions related to................................................. 58
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