Next week, we will hold a first anniversary Buddhist memorial service for my father at our home.

He is color blind and cannot distinguish between red and green.

His social status is very high.

Kaku is my best friend.

This house is old, but you can feel its character.

We need to calculate the azimuth of this building.

Trigonometry is a branch of mathematics that studies the relationship between angles and triangles.

An urgent report has arrived.

Because a fire broke out, I immediately raised an alarm.

He learned how to operate a mortar.