My grandmother has weak sight, so it's difficult for her to read small letters.

It's difficult to decipher this chemical equation.

He made good use of his English to give a presentation at an international conference.

He made excellent use of his knowledge to solve the problem.

He cut the apple into thin longitudinal slices.

He obtained a Bachelor of Science degree.

Can I try on this dress in the fitting room?

Kobayashi is my friend.

Mr. Wakabayashi is my best friend.

Hirabayashi is my best friend.