The comet currently headed for the sun may be part of the so-called Kreutz group of comets, which are known for having orbits that bring them within a few hundred thousand miles of the sun.
这颗冲向太阳的彗星可能是所谓的克鲁兹彗星家族的一员，这个彗星家族以其特殊的运行轨道而闻名于世，该轨道会将其带入太阳附近。
The tail lengths of comet cell of all organs in group treated with high fluoride were increased compared with that of control group (P< 0.05).
高氟组的甲状腺、肝、肾和肺组织的细胞拖尾率反比低碘组的拖尾率有不同程度的降低（P>0.05）。
Results:The comet rate and comet length of each tissue DNA in test groups increased significantly(P<0.05)compared with control group. And it showed a good dose-response relationship.
结果：各照射剂量组小鼠组织细胞拖尾率和拖尾细胞尾长比对照组显著增加（P<0.05），并呈现良好的剂量反应关系。
Results:The comet rate and comet length of each tissue DNA in test groups increased significantly(P<0.05)compared with control group. And it showed a good dose-response relationship.
结果：各照射剂量组小鼠组织细胞拖尾率和拖尾细胞尾长比对照组显著增加（P<0.05），并呈现良好的剂量反应关系。
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