1、A syllogism is a type of logical argument that uses deductive reasoning to arrive at a conclusion based on two propositions that are asserted or assumed to be true.
三段论是一种使用演绎推理来根据两个被假定为真的命题得出结论的逻辑论证方法。

2、The syllogism goes like this: all men are mortal, Socrates is a man, therefore Socrates is mortal.
这个三段论的推理过程如下：所有人都是有限生命的，苏格拉底是个人，所以苏格拉底也是有限生命的。