He went out in the middle of the night to covertly investigate the incident.

Calculating the value of the tangent, which is one of the trigonometric functions, is difficult.

How many liters of water can this tank hold?

Christmas is the day to celebrate the birth of Jesus Christ.

My birthstone is emerald.

He completed the project in a short term.

This terminal supports the latest software.

I was disappointed with the test results.

I felt a deep disappointment because of his actions.

The tip of this pen is very thin.