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对抗病毒是一场持续的战斗,科学必须始终领先一步。
The jaws of power are always open to devour, and her arm is always stretched out, if possible, to destroy the freedom of thinking, speaking, and writing.
尝试一种方法是常识。如果失败了,坦率地承认并尝试另一种方法。但最重要的是,尝试一些事情。