Due to its periodicity , unpredictability,calamity and durability, we the human have not had ways to accurately predict as well as effectively avoid a start of pandemic yet.

　
英 美
  • 流感大流行有一定的周期性、不可預見(jiàn)性、災害性、持久性,至今人類(lèi)依然沒(méi)有找到準確預見(jiàn)、避免一場(chǎng)新的流感大流行的良策。
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