四则混合运算指的是哪四个

At this time, Lin Renzhu came very quickly, three feet away from the master, and said: Let's put aside the hatred between you and me for the time being. This person and I have a sworn hatred. My leg was injured by this person. Chen Wuji was also injured by his hand and lost his arms. Since you have an enmity with him, why don't we join forces first? How about getting rid of what he's saying?

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