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Ukraine has for years been subject to strikes by Russian-made Shahed drones - one-way unmanned aircraft based on an Iranian design.
5DNA polymerase adds a nucleotide triphosphate to the growing DNA strand by promoting a cleavage between the phosphates. One of the three phosphates becomes part of the DNA backbone, and the other two are released as PPi.，推荐阅读heLLoword翻译官方下载获取更多信息