Its digital cards look like the real thing.

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So, while the trade deficit remained large (not a good thing), its slight shrinkage in the third quarter boosted real GDP by one percentage point, down from a net boost of 2.5 percentage points in the second quarter.

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Their milk looks and tastes like the real thing, but once its proteins are filtered and purified into a fine white powder, they can be spun into tough thread.

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Concepts discussed have included live uploading of fitness stats so performance can be monitored in real time, music that matches its BPM to heart rate and the one thing that is rarely discussed - video conferencing in a way that even Google Glasses will struggle to replicate.

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Although Mr Peruvemba says his firm has started manufacturing displays with flexible backplanes in-house, its many partners are also busy researching ways to make electronic paper as flexible as the real thing.

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This is done in the hope that the protein will keep its shape better, and the immune system will thus be able to produce antibodies that recognise the real thing when they encounter it on a wild virus.

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There are a lot issues here, but its important to remember that construction, capital accumulation, domestic investment, and real savings are largely four terms for the same thing.

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