He finished the job in slightly more than an hour.

Tsuyoshi is my best friend.

He is a very strong person.

His strength comes from his mental power.

Please use the emergency stairs in case of a fire.

Due to the earthquake, the city declared a state of emergency.

He ended up in a vegetative state after the accident.

This program is designed to avoid a race condition.

Understanding the transition state of a chemical reaction is important for predicting the progress of the reaction.

The negotiations have fallen into a deadlock.