免疫系统就像一把双刃剑；它可以对抗癌症，但也需要被控制。
"The immune system is like a double-edged sword; it can fight cancer but also needs to be controlled."
The pursuit of mathematical truth is a pursuit of beauty, elegance, and simplicity.
The past is a foreign country; they do things differently there.
The past is a different country, they do things differently there.
解释：所谓美的东西，无论在上下、内外还是远近，都不会产生危害，所以才叫做美。
愛は、時に痛みを伴うが、それでも愛し続けることが大切だ。
唯一存在的限制是你给自己设定的限制。
在存在的静默中，答案自然浮现。