He turned on the headlights and drove down the night road.

The headlight of my bicycle has broken.

He is doing special exercises to train his serratus anterior muscle.

He exercises every day to strengthen his tibialis anterior muscle.

She was diagnosed with placenta previa.

The issue of the previa vessel is a very important issue in obstetrics.

He used to work as a herald in the past.

She is interested in spiritualism.

Primates are a part of mammals that includes humans.

This rock is gabbro.