Yuzuki is my best friend.

Mr. Shinotsuka is my best friend.

He is researching the effects of underground nuclear tests.

He is researching about the sphincter in the digestive system.

I am training my gluteus by doing squats every day.

With daily exercise, his gluteus minimus became stronger.

The golden jackal was named for its beautiful fur color.

He donated all the money and goods.

I want to eat the chestnut sweet potato that my grandmother made for New Year's.

The chestnut sweet paste my mother made was very delicious.