“或”与“且”是数学中常用的逻辑联结词 ,这里的“或”与日常语言中的“或者”、“可能…也可能…”和“也许… ,也许…”的意思接近 ,而且是可兼容的(即两者中至少一个成立 ) .这里的“且”与日常语言中的“和”、“并且”、“以及”、“既…又”意思相当 (即两者必须同时成 “Or” and “and” are logical conjunctions commonly used in mathematics, where “or” is close to the meaning of “or”, “possible...or possible...” and “maybe..., maybe...” in everyday language, and It is compatible (that is, at least one of the two is true). Here, “and” is equivalent to “and”, “and”, “and”, “both...” in everyday language (that is, both must be simultaneously