Shiho is my best friend.

Nanako is my best friend.

She checked the vision of one eye using an eye occluder.

Golden Cicada is a legendary hero in China.

He suffered a fracture of the lesser trochanter.

He fractured his greater trochanter.

The theory of harmonic oscillators is a fundamental concept in physics.

She's always a goody two shoes, and is well-liked by her teachers.

Yuriko is my best friend.

A binary operator is one of the basic concepts in algebra.