来自《耶鲁大学开放课程：生物医学工程探索 第8集 第8集》

• 
  
  the first thing that happens is that
  首先发生的是
• 
  
  this T-cell becomes activated and it starts reproducing,
  T细胞被激活并开始增殖
• 
  
  making more copies of itself.
  制造更多自身拷贝
• 
  
  So, reproduction, proliferation, cell growth happens and
  所以 繁殖 扩增 细胞开始生长
• 
  
  then those cells become more differentiated.
  然后这些细胞开始分化
• 
  
  They become more mature and they mature into, in this case,
  变得更加成熟 变成了 在这里
• 
  
  they mature into cytotoxic cells,
  它们成熟分化为了细胞毒细胞
• 
  
  and they mature into cytotoxic means
  成熟分化为细胞毒T淋巴细胞
• 
  
  'cyto' - cell, '
  cytotoxic中的cyto是细胞
• 
  
  toxic' - killing,
  toxic代表杀死
• 
  
  they mature into cells
  它们成熟分化为
• 
  
  that are capable of killing other cells.
  具有杀死其他细胞能力的细胞