| 21. | And from then on the speeches came in thematic building blocks.
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| 22. | The basic building block ( monomer ) of polyethylene is ethylene.
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| 23. | But both companies lacked important building blocks to become truly global.
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| 24. | Erick is obviously one of the building blocks of the program,
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| 25. | Embryonic stem cells are the basic building blocks for body tissue.
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| 26. | Each QYne stage uses the previous stage as a building block.
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| 27. | This unsaturated imide is an important building block in organic synthesis.
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| 28. | Both contain enhanced levels of the building blocks of vitamin A.
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| 29. | The White Squadron Naval Building Blocks from 1892 look like fun.
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| 30. | Embryonic stem cells are the basic building blocks of the body.
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