1. "This is the key gene for overcoming the early stage of rejection." 
   "这是个解决早期排异反应的关键基因。"
2. regulation of gene expression 
   基因调控
3. Good afternoon. I'd like to have these documents typed and Xeroxed immediately, because I need them for a negotiation early tomorrow morning. 
   你好，请马上把这些文件打印、复印出来，明天一早我谈判时用。
4. this fact is borne out by our historical experience in the economic readjustments of the years immediately following Liberation and of the early 1960s. 
   这在全国解放初期和六十年代初期两次调整的历史经验已经充分证明了。
5. the suppression of a gene by the effect of an unrelated gene. 
   一个基因受到另一个与其不相关基因的抑止或压迫。

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