Shigeru's birthday is in February.

Saturated fatty acids may increase the risk of heart disease.

Unsaturated fatty acids are said to be good for health.

This letter will be relayed.

This train is a direct service to Ye.

Thunder roared, and lightning ran.

Proto-Indo-European is considered the origin of many modern languages.

His success had a cause-and-effect relationship with his efforts.

Influenza is prevalent, so don't forget to wash your hands and wear a mask.

Phonology is a branch of linguistics that studies the system of sounds and their functions.