Descartes considered the idea that his demon could simply cause him to believe that 2+3=5, and that this may not be the case.

但笛卡尔把这个想法看成：那个恶魔能轻而易举地让他相信2+3=5，同时这也不一定就是实情。

youdao

When we say that 2 + 2 = 4 or 2 + 3 = 5, we're saying something about numbers that our mind is able to grasp.

当我们说2+2=4或2+3=5时,我们是在讨论心灵可以掌握的数字

youdao

My phone number is 9-1-2-3-5-6 double 7.

我的电话号码是9-1-2 - 3 5-6-7 - 7。

youdao

When we say that 2 + 2 = 4 or 2 + 3 = 5, we're saying something about numbers that our mind is able to grasp.

当我们说2+2=4或2+3=5时,我们是在讨论心灵可以掌握的数字

耶鲁公开课 - 死亡课程节选