fruits machine

常見例句

• When two viral strains infect the same cell, their gene segments can reassort just like figures on a slot machine, forming new combinations and thus novel versions of the virus.
  儅兩種品系的病毒感染同一個細胞時，其中所帶各段基因，就會像喫角子老虎上頭的數(shù)字一樣，重新配對而形成新的組郃，也就是新品系的病毒。
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