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

He obtained a Bachelor of Science degree.

He cut the apple into thin longitudinal slices.

Mr. Kushi is my best friend.

He sent me a 'kushi' (slang for a short message or information).

Yakitori is skewered and grilled.

He made excellent use of that opportunity to fully demonstrate his abilities.

He excels in the ability to command English.

It's difficult to decipher this chemical equation.

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