The use of this machine is simple.

Vanadium is used to increase the strength of steel.

The strength of this bridge is very high.

We are conducting various activities to raise the confidence of our students.

This bridge is made of steel.

This building's structure uses silicon steel.

This computer can be used by anyone.

This building is strengthened by using silicon steel.

Koukichi is my best friend.

This bridge is reinforced with steel wire.