在生活中，你是否做过科学尝试呢？或许没有，但是我做过，快来看一下吧！
Have you ever made any scientific attempts in your life? Perhaps not, but I have done it before. Come and take a look!
那是一次偶然，我在电视中发现了这个实验。在战争时代，情报工作者为了平安的能把情报送出去，而不被敌人发现，就用一种叫“写密信”的方法。看到这里，我感到好奇，写出来的字，我们怎么看不见呢？不如，我就去做一次科学尝试吧！
It was a coincidence that I discovered this experiment on TV. In times of war, intelligence workers use a method called "ldquo; Write a confidential letter; The method. Seeing this, I feel curious. Why can't we see the words written here? Why don't I just give it a scientific try!
我拿出一本《科技书》，从中找到了做实验的步骤。我首先用洁净的毛笔蘸取了一些白醋，接着把一张白纸展开平放在桌子上，用毛笔在纸上写下一句诗。等字变干后，白纸上就看不出字的痕迹了。然后用洁净的毛笔蘸点从胡萝卜中得到的液体均匀地涂在白纸上，字就显现出来了。
I took out a 'Science and Technology Book' and found the steps for conducting experiments from it. I first dipped a clean brush into some white vinegar, then unfolded a piece of white paper and placed it flat on the table, using the brush to write a poem on the paper. After the characters dry, no traces of the characters can be seen on the white paper. Then use a clean brush dipped in the liquid obtained from the carrot and evenly spread it on white paper, and the characters will appear.
这是什么原理？我就去查阅了一下电脑，电脑显示，原来白醋密信的秘密在于胡萝卜的天然色素，只要把胡萝卜汁液涂在含有酸的物体上，它就会在白纸上显出字来。我为自己找出了答案而感到格外高兴。
What principle is this? I checked my computer and it showed that the secret of the white vinegar secret letter lies in the natural pigment of carrots. As long as the carrot juice is applied to an object containing acid, it will appear on white paper. I am particularly happy to have found the answer for myself.
“探索真理比占有真理更为可贵”爱因斯坦说的这句可真是至理名言。只要你做生活的有心人，有一颗敏锐的心和一双善于观察的眼睛，你就可以发现自己从来不知道的科学奥秘。
“ Exploring truth is more valuable than possessing truth; Einstein's statement is truly a wise saying. As long as you are a thoughtful person in life, with a sharp heart and a pair of observant eyes, you can discover scientific mysteries that you have never known before.