I learned the Structure of Drugs, but it was difficult for me.

Today I was studying the structure of drugs at college.
It was a difficult lesson  class, because it was in English. the class using English only.
I found the technical words tiring. was tired by many technical words.
but Even so, I think it is a good method for of studying English.
I did not study "English" only (for example grammar,words, and idioms....) and I thought that it was an effective way to study using English.

I learned Structure of Drug but it was difficult for me.

Today I was study structure of drug at collage.
It was difficult class,because the class using English only.
I was tired by many technical words.
but i think it is good method for study English.
I did not study "English" only(for example grammar,words,idiom....) and thought that it was effective to study using English.

I learned the structure of drugs and it was difficult for me.

Today, I studied the structure of drugs at college.

It was difficult for me to follow the class, because the class was in English.

I was tired by many technical terms. However, I think it is a good method for studying English. I did not study English in particular so I thought it might be the effective way for me to learn English.

I am not a native English speaker, though I just gave a try.

Anyway, I hope it helps :)