Describe the most important decision that you have made in your life.

说出你生命中所做出的最重要决定。

The most important decision that I have ever made is when I was 19 years old.
我曾经做过最重要的决定是在自己19岁的时候。
I chose chemistry as my major in my college.
那时我选择化学作为大学的专业。
It's of great importance because it determines what I will learn and what I will do the next four years.
这一决定至关重要,因为它决定了我未来四年将会学到什么及能做什么。
What is more, it partly determines my future career for the rest of my life.
更重要的是,在一定程度上它决定了我未来的职业生涯。
After four years of study, I think I made a right decision, because I do like chemistry and have learned a lot of skills.
经过四年的学习后,我认为自己做了一个正确的决定,因为我喜欢化学并且学会了很多技能。
I also have learned how to create an idea and implement it in my study and scientific research, which is an important ability during my lifetime.
我也学习了通过我的学习和科研如何创建一个想法并实现它,这在我的一生中是非常重要的能力。