1. The tentacled, usually bell-shaped, free-swimming sexual stage in the life cycle of a coelenterate, such as a jellyfish. 
   水螅水母有触手的，通常呈带状的，生命周期中有性阶段自由游动的腔肠动物，如水母
2. Any of numerous usually free-swimming marine coelenterates of the class Scyphozoa, characteristically having a gelatinous, tentacled, often bell-shaped medusoid stage as the dominant phase of its life cycle. 
   水母，海蜇大量的、经常自由游动的真水母类腔肠动物，胶质的、带有触须的、常为钟形的类水母体阶段是其生命循环中的主要形式
3. Before the bell ring 
   铃响前
4. Since the bell rang 
   从响铃到现在
5. since the bell ring 
   从响铃到现在

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• 1. 钟状期
  中幼粒细胞||myelocyte; 又称“髓细胞”。...钟状期||bell stage...终变期||diakinesis
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• 2. 此时为钟形期
  ?此时为钟形期(bell stage) ?箭头所指为牙本质(dentin) ?箭头所指为造牙本质母细胞层
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